Sunnyvale, California, United States of America: What to pack, what to wear, and when to go [2022]
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Traveling to Sunnyvale, California, United States of America? If you're planning to go to Sunnyvale, here is some important information about when to go, what to wear, and what to pack.
Contents
- When to go to Sunnyvale
- Important essentials for Sunnyvale
- Activities for Sunnyvale
- Sunnyvale in January: weather and what to pack
- Sunnyvale in February: weather and what to pack
- Sunnyvale in March: weather and what to pack
- Sunnyvale in April: weather and what to pack
- Sunnyvale in May: weather and what to pack
- Sunnyvale in June: weather and what to pack
- Sunnyvale in July: weather and what to pack
- Sunnyvale in August: weather and what to pack
- Sunnyvale in September: weather and what to pack
- Sunnyvale in October: weather and what to pack
- Sunnyvale in November: weather and what to pack
- Sunnyvale in December: weather and what to pack

About your travel guide
Hi! I'm Dev. I've traveled all over the world and in my travels, I have made many packing lists. In this series, my team and I have compiled the most useful information, as well as things we couldn't live without, to help you plan your trip.
When to go to Sunnyvale, California, United States of America
Based on the climate and weather in Sunnyvale, the best time to go is August. See below for details.
Important essentials for Sunnyvale, California, United States of America
Here are some general tips on what to wear in Sunnyvale, as well as several items to remember to pack when traveling there.
COVID-19 ESSENTIALS FOR 2022
-
Travel disinfecting wipes
Use these to sanitize plane and hotel surfaces.
-
Hand sanitizer
This hand sanitizer is a good TSA-friendly option.
-
A vaccine card protector
Vaccine cards can wear out. An unreadable card can have severe consequences. This vaccine card protector helps avoid that.
Travel insurance
If you or a companion get COVID-19, your amazing trip can be ruined. Good travel insurance can help. See plans
-
Kids' KN95 masks
N95 masks are not available for kids. These are a good alternative (and can also be used by adults if N95 masks are not available).
-
N95 masks to use in crowded airports
These N95 masks provide the best level of COVID-19 protection possible.
General health necessities
Don't forget these
-
For families with young children
-
Money/passport pouch
A money pouch is vital for protecting your passport and credit cards.
-
Plug adapter
A plug adapter that supports outlet types A and B. This one should be sufficient for most locations, but check with your hotel.
-
Airplane or car necessities
-
Power bank for devices
A portable power bank, like this one
-
Voice and data SIM card
A SIM card that works in Sunnyvale. A good global SIM card works in most countries, but check the country list before buying.
What to wear/what to pack for Sunnyvale, California, United States of America by month
Already know when you're traveling?
January
January in Sunnyvale is cool. The rain can amount to several inches/centimeters. During this time, temperatures average in the low 50s F (low 10s C) to high 50s F (mid 10s C), although night temperatures can dip into the low 40s F (single digits C).
What to wear/what to pack:
-
Light and heavy skirts
-
Pants or jeans
-
Light jacket or fleece
-
Long sleeve shirts or blouses
-
Standard footwear
-
Extra socks
-
Dresses
-
A rain poncho to layer with a jacket
-
100% waterproof footwear
We suggest rain boots:
-
Rain pants
These will be essential in a rainstorm.
-
Waterproof phone bag
-
Umbrella
This one is a great choice.
-
Waterproof bag/luggage cover
So your things stay dry. We recommend:
If you go to Sunnyvale Heritage Park and Museum, you'll probably do a lot of walking. These are a must:
-
Ultralight day pack
Like this, so you don't have to lug around a heavy suitcase.
-
Binoculars
-
Good hiking shoes
These are designed for this kind of walking, and can breathe and can get wet
-
Small portable cooler
Save money on drinks with this portable cooler.
February
If you vacation in Sunnyvale during February, you are likely to find that it is crisp. Temperatures tend to hover around the low 60s F (high 10s C) during the day, while at night they can dip into the 40s F (single digits C). Humidity is generally between 50 and 60% during the day. In terms of precipitation, you can expect it to rain about a third of the time.
What to wear/what to pack:
-
Standard footwear
-
Dresses
-
Long sleeve shirts or blouses
-
Extra socks
-
Pants or jeans
-
Light jacket or fleece
-
Light and heavy skirts
-
A rain coat to layer with a coat
-
100% waterproof footwear
We use these rain boots:
-
Rain pants
These pants will be essential in a storm.
-
Waterproof phone bag
-
Wind resistant umbrella
This one is a perfect choice.
-
Waterproof bag/luggage cover
So your bags stay dry. We recommend:
If you go to Sunnyvale Heritage Park and Museum, you'll probably do a lot of walking. These are a must:
-
Ultralight day pack
Like this, so you don't have to lug around a heavy suitcase.
-
Binoculars
-
Good hiking shoes
These are designed for this kind of walking, and can breathe and can get wet
-
Small portable cooler
Save money on drinks with this portable cooler.
March
If you vacation in Sunnyvale during March, you might notice that it is crisp. Temperatures tend to hover around the 60s F (high 10s C) during the day, while at night they can dip into the high 40s F (single digits C). Humidity is generally between 50 and 60% during the day. In terms of precipitation, you can expect it to rain about a third of the time.
What to wear/what to pack:
-
Light jacket or fleece
-
Pants or jeans
-
Long sleeve shirts or blouses
-
Extra socks
-
Standard footwear
-
Dresses
-
Light and heavy skirts
-
A rain coat to layer with a jacket
-
100% waterproof footwear
We like rain boots:
-
Rain pants
Rain pants can be vital in a rainstorm.
-
Waterproof phone bag
-
Wind resistant umbrella
This one is a perfect one to buy.
-
Waterproof bag/luggage cover
So your things don't get wet. We recommend:
If you go to Sunnyvale Heritage Park and Museum, you'll probably do a lot of walking. These are a must:
-
Ultralight day pack
Like this, so you don't have to lug around a heavy suitcase.
-
Binoculars
-
Good hiking shoes
These are designed for this kind of walking, and can breathe and can get wet
-
Small portable cooler
Save money on drinks with this portable cooler.
April
April for Sunnyvale is balmy. Temperatures average in the high 60s F (low 20s C) during the day. It rains sometimes.
What to wear/what to pack:
-
Light and heavy skirts
-
Standard footwear
-
Dresses
-
Pants or jeans
-
Light jacket or fleece
-
Extra socks
-
Long sleeve shirts or blouses
-
A rain poncho to layer with a coat
-
100% waterproof footwear
We like rain boots:
-
Rain pants
Rain pants are vital in a storm.
-
Waterproof phone bag
-
Wind resistant umbrella
This one is a perfect one to buy.
-
Waterproof bag/luggage cover
So your belongings remain dry. We recommend:
If you go to Sunnyvale Heritage Park and Museum, you'll probably do a lot of walking. These are a must:
-
Ultralight day pack
Like this, so you don't have to lug around a heavy suitcase.
-
Binoculars
-
Good hiking shoes
These are designed for this kind of walking, and can breathe and can get wet
-
Small portable cooler
Save money on drinks with this portable cooler.
May
If you visit Sunnyvale during May, you may find that it is mild and dry with little rain. Temperatures tend to hover around the low 70s F (low 20s C) during the day, while at night they can dip into the low 50s F (low 10s C). Humidity is generally between 50 and 60% during the day.
What to wear/what to pack:
-
Sunscreen lotion
-
Bug repellent
-
Sandals
-
Light skirts
-
Breathable footwear or sandals
-
Short pants or heavy shorts
-
Extra socks
-
Light dresses
You can find some great options here
-
Long and short sleeve shirts
If you go to Sunnyvale Heritage Park and Museum, you'll probably do a lot of walking. These are a must:
-
Ultralight day pack
Like this, so you don't have to lug around a heavy suitcase.
-
Binoculars
-
Good hiking shoes
These are designed for this kind of walking, and can breathe and can get wet
-
Small portable cooler
Save money on drinks with this portable cooler.
June
June for Sunnyvale is warm and very dry with almost no rain. Temperatures average in the 70s F (mid 20s C) during the day.
What to wear/what to pack:
-
Light skirts
-
Sandals
-
Long and short sleeve shirts
-
Light dresses
You can find some great options here
-
Sunscreen lotion
-
Bug repellent
-
Breathable footwear or sandals
-
Short pants or heavy shorts
-
Extra socks
If you go to Sunnyvale Heritage Park and Museum, you'll probably do a lot of walking. These are a must:
-
Ultralight day pack
Like this, so you don't have to lug around a heavy suitcase.
-
Binoculars
-
Good hiking shoes
These are designed for this kind of walking, and can breathe and can get wet
-
Small portable cooler
Save money on drinks with this portable cooler.
July
If you are traveling to Sunnyvale in July, you will notice that it is warm and very dry with almost no rain. Daytime temperatures are in the high 70s F (mid 20s C).
What to wear/what to pack:
-
Bug repellent
-
Sandals
-
Light skirts
-
Sunscreen lotion
-
Light dresses
You can find some great options here
-
Short pants or heavy shorts
-
Long and short sleeve shirts
-
Breathable footwear or sandals
-
Extra socks
If you go to Sunnyvale Heritage Park and Museum, you'll probably do a lot of walking. These are a must:
-
Ultralight day pack
Like this, so you don't have to lug around a heavy suitcase.
-
Binoculars
-
Good hiking shoes
These are designed for this kind of walking, and can breathe and can get wet
-
Small portable cooler
Save money on drinks with this portable cooler.
August
August is warm and very dry with almost no rain. Temperatures average in the high 70s F (mid 20s C) during the day.
What to wear/what to pack:
-
Sunscreen lotion
-
Light skirts
-
Light dresses
You can find some great options here
-
Sandals
-
Breathable footwear or sandals
-
Bug repellent
-
Extra socks
-
Long and short sleeve shirts
-
Short pants or heavy shorts
If you go to Sunnyvale Heritage Park and Museum, you'll probably do a lot of walking. These are a must:
-
Ultralight day pack
Like this, so you don't have to lug around a heavy suitcase.
-
Binoculars
-
Good hiking shoes
These are designed for this kind of walking, and can breathe and can get wet
-
Small portable cooler
Save money on drinks with this portable cooler.
September
September in this region is a perfect temperature and very dry with almost no rain. Temperatures average in the high 70s F (mid 20s C) during the day.
What to wear/what to pack:
-
Short pants or heavy shorts
-
Light skirts
-
Sunscreen lotion
-
Breathable footwear or sandals
-
Long and short sleeve shirts
-
Extra socks
-
Light dresses
You can find some great options here
-
Bug repellent
-
Sandals
If you go to Sunnyvale Heritage Park and Museum, you'll probably do a lot of walking. These are a must:
-
Ultralight day pack
Like this, so you don't have to lug around a heavy suitcase.
-
Binoculars
-
Good hiking shoes
These are designed for this kind of walking, and can breathe and can get wet
-
Small portable cooler
Save money on drinks with this portable cooler.
October
If you go to Sunnyvale in October, you will notice that it is warm and dry with little rain. Expect it to rain sometimes. Daytime temperatures are in the low 70s F (low 20s C).
What to wear/what to pack:
-
Long and short sleeve shirts
-
Bug repellent
-
Light dresses
You can find some great options here
-
Light skirts
-
Sandals
-
Extra socks
-
Short pants or heavy shorts
-
Breathable footwear or sandals
-
Sunscreen lotion
-
A rain coat to layer with another jacket
-
100% waterproof footwear
We suggest rain boots:
-
Rain pants
Rain pants will be vital in a storm.
-
Waterproof phone bag
-
Windproof umbrella
This one is a perfect one to buy.
-
Waterproof bag/luggage cover
So your belongings remain dry. We suggest:
If you go to Sunnyvale Heritage Park and Museum, you'll probably do a lot of walking. These are a must:
-
Ultralight day pack
Like this, so you don't have to lug around a heavy suitcase.
-
Binoculars
-
Good hiking shoes
These are designed for this kind of walking, and can breathe and can get wet
-
Small portable cooler
Save money on drinks with this portable cooler.
November
November in Sunnyvale is balmy. Temperatures average in the 60s F (high 10s C) during the day. It rains regularly.
What to wear/what to pack:
-
Long sleeve shirts or blouses
-
Light jacket or fleece
-
Pants or jeans
-
Standard footwear
-
Extra socks
-
Dresses
-
Light and heavy skirts
-
A rain poncho to layer with another jacket
-
100% waterproof footwear
We like these rain boots:
-
Rain pants
Rain pants are essential in a rainstorm.
-
Waterproof phone bag
-
Wind resistant umbrella
This one is a perfect choice.
-
Waterproof bag/luggage cover
So your belongings don't get wet. We suggest:
If you go to Sunnyvale Heritage Park and Museum, you'll probably do a lot of walking. These are a must:
-
Ultralight day pack
Like this, so you don't have to lug around a heavy suitcase.
-
Binoculars
-
Good hiking shoes
These are designed for this kind of walking, and can breathe and can get wet
-
Small portable cooler
Save money on drinks with this portable cooler.
December
If you are traveling to Sunnyvale in December, you will notice that it is relatively cool. Expect it to rain regularly. Daytime temperatures are in the high 50s F (mid 10s C).
What to wear/what to pack:
-
Long sleeve shirts or blouses
-
Standard footwear
-
Pants or jeans
-
Light jacket or fleece
-
Dresses
-
Light and heavy skirts
-
Extra socks
-
A rain jacket to layer with another jacket
-
100% waterproof footwear
We like rain boots:
-
Rain pants
These will be a lifesaver in a storm.
-
Waterproof phone bag
-
Windproof umbrella
This one is an excellent choice.
-
Waterproof bag/luggage cover
So your belongings don't get wet. We recommend:
If you go to Sunnyvale Heritage Park and Museum, you'll probably do a lot of walking. These are a must:
-
Ultralight day pack
Like this, so you don't have to lug around a heavy suitcase.
-
Binoculars
-
Good hiking shoes
These are designed for this kind of walking, and can breathe and can get wet
-
Small portable cooler
Save money on drinks with this portable cooler.
Activities for Sunnyvale, California, United States of America
Here are some activity recommendations and activity-specific packing tips for Sunnyvale.
Check out our guides for these other locations: Terrace Bay, Ontario, Canada, El Jadida, Morocco, Tanjung Batu, Indonesia, Southampton, England, United Kingdom, Charklik, China, Tornio, Finland, Gruyères, Switzerland, Kerkouane, Tunisia, Presidio, Texas, United States of America, Viruveedu, India, and Danville, North Carolina, United States of America.