May weather forecastSanta Clara, CA
May
Weather in May
In May, Santa Clara experiences a definite transition towards summer. The weather grows warmer but remains bearable, while the level of rainfall reduces significantly. This leads to a resurgence of outdoor activities with the city bustling with vibrant energy. The complimenting weather conditions make it an optimal time for enjoying a broad spectrum of activities from water sports to hiking amid the scenic Californian landscapes. The temperature dipping as low as 48.9°F (9.4°C) and going up to 70.3°F (21.3°C) on certain days, completes the scenic beauty of Santa Clara in this congenial month.Temperature
The arrival of May sees an average high-temperature of a pleasant 70.3°F (21.3°C), hardly diverging from April's 66.7°F (19.3°C). Nighttime temperatures hover around an average low of 48.9°F (9.4°C) in May.Humidity
In Santa Clara, the average relative humidity in May is 67%.Rainfall
In Santa Clara, in May, during 5.3 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, there are 70.2 rainfall days, and 9.8" (249mm) of precipitation is accumulated.Daylight
In May, the average length of the day is 14h and 11min.On the first day of the month, sunrise is at 6:11 am and sunset at 7:57 pm. On the last day of May, sunrise is at 5:48 am and sunset at 8:22 pm PDT.
Sunshine
In Santa Clara, the average sunshine in May is 11h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The UV index of 5 in May translates into these instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Santa Clara, CA
- Average high temperature in May: 70.3°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (56.7°F).
- Average low temperature in May: 48.9°F
The month with the highest average low temperature is August (56.3°F).
The coldest months (with the lowest average low temperature) are January and February (43.3°F).
Average pressure in May
Santa Clara, CA
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in May
Santa Clara, CA
- Average wind speed in May: 5.8mph
The windiest months (with the highest average wind speed) are April and May (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity in May
Santa Clara, CA
- Average humidity in May: 67%
The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are July and September (61%).
Average rainfall in May
Santa Clara, CA
- Average rainfall in May: 0.51"
The wettest month (with the highest rainfall) is March (1.77").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in May
Santa Clara, CA
- Average rainfall days in May: 5.3 days
The month with the highest number of rainy days is March (12.9 days).
The month with the least rainy days is August (0.8 days).
Average daylight in May /
Average sunshine in May
Santa Clara, CA
- Average daylight in May: 14h and 12min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in May: 11h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in May
Santa Clara, CA
- Average sunshine days in May: 24.2 days
The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (16.7 days).
Average UV index in May
Santa Clara, CA
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in May
Santa Clara, CA
- Average cloud cover in May: 22
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in May
Santa Clara, CA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
