What’s the climate like in Sunnyvale?
The current climate of Sunnyvale features average monthly temperatures ranging from highs of 27°C during the day to lows of 16°C. The average yearly temperature is around 22°C. At night, temperatures in the colder months average around 7°C and in the warmer months around 16°C.
The highest temperature recorded in Sunnyvale in recent years was 42°C in September 2017. The lowest daytime temperature recorded was 8°C in December 2015.
On average, Sunnyvale receives 412 mm of precipitation each year. For comparison, London gets 701 mm of precipitation annually.
Best time to visit Sunnyvale?
The best time to visit Sunnyvale for sunny weather is February through November. During this period, you'll have good temperatures and not too much rain, making it a great time to visit Sunnyvale. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
Climate Table of Sunnyvale
The climate table of Sunnyvale shows the average temperatures, precipitation, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 16 | 18 | 19 | 21 | 22 | 26 | 26 | 27 | 27 | 25 | 19 | 16 |
| Temp. min (°C) | 7 | 8 | 9 | 11 | 13 | 15 | 16 | 17 | 16 | 13 | 9 | 7 |
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| Precipitation (mm) | 70 | 72 | 78 | 19 | 19 | 0,6 | 0,1 | 0,2 | 3,4 | 13 | 42 | 94 |
| UV Index | 3 | 5 | 6 | 6 | 7 | 8 | 9 | 8 | 7 | 5 | 5 | 3 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 22°C
- Highest temperature: 27°C in August and September
- Lowest temperature: 16°C in January and December
- Precipitation: 412 mm per year, averaging 34 mm per month
- Driest months: 0,1 mm in July, 0,2 mm in August and 0,6 mm in June
- Wettest months: 94 mm in December, 78 mm in March and 72 mm in February
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Table of Contents
Average Temperature per Month in Sunnyvale
This graph shows the average maximum temperatures per month in Sunnyvale, California. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Sunnyvale
This graph shows how much precipitation Sunnyvale, California, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average UV Index per Month in Sunnyvale
This graph shows the average UV index per month in Sunnyvale, California. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in Sunnyvale
This graph shows the average yearly temperature in Sunnyvale, California. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Sunnyvale
This chart shows the total yearly precipitation in Sunnyvale, California, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Weather experiences in Sunnyvale
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Average Weather in Sunnyvale by Month
Click on a month below to see detailed weather info for Sunnyvale. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
