May weather forecastSanta Monica, CA
May
Weather in May
May, the last month of the spring in Santa Monica, is another pleasant month, with temperature in the range of an average low of 56.3°F (13.5°C) and an average high of 70.9°F (21.6°C).Temperature
At the start of May, Santa Monica's average high-temperature reaches a still agreeable 70.9°F (21.6°C), subtly different from the preceding month. Throughout the month of May, the nighttime temperature dips to an average of 56.3°F (13.5°C).Humidity
In May, the average relative humidity is 65%.Rainfall
In Santa Monica, in May, during 4.4 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. In Santa Monica, California, during the entire year, the rain falls for 48.8 days and collects up to 7.52" (191mm) of precipitation.Ocean temperature
The months with the coldest seawater are January through May and December, with an average ocean temperature of 59°F (15°C).Note: Most people find swimming in 59°F (15°C) unenjoyable. As the water temperature falls from 69.8°F (21°C) to 59°F (15°C), controlling one's breathing becomes harder.
Daylight
In Santa Monica, the average length of the day in May is 13h and 57min.On the first day of May, sunrise is at 6:03 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 7:59 pm PDT.
Sunshine
In May, the average sunshine is 10.9h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In May, the average maximum UV index of 5 translates into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Santa Monica, CA
- Average high temperature in May: 70.9°F
The warmest month (with the highest average high temperature) is August (80.8°F).
The month with the lowest average high temperature is December (63.9°F).
- Average low temperature in May: 56.3°F
The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (50.5°F).
Average pressure in May
Santa Monica, CA
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).
Average wind speed in May
Santa Monica, CA
- Average wind speed in May: 5.9mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are August and September (4.8mph).
Average humidity in May
Santa Monica, CA
- Average humidity in May: 65%
The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (52%).
Average rainfall in May
Santa Monica, CA
- Average rainfall in May: 0.24"
The wettest month (with the highest rainfall) is January (1.54").
The driest months (with the least rainfall) are June and August (0.08").
Average rainfall days in May
Santa Monica, CA
- Average rainfall days in May: 4.4 days
The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is August (1.8 days).
Average sea temperature in May
Santa Monica, CA
- Average sea temperature in May: 59°F
The best months for swimming (with the highest average sea temperature) are August, September and October (66°F).
The coldest months (with the lowest average sea temperature) are January, February, March, April, May and December (59°F).
Average daylight in May /
Average sunshine in May
Santa Monica, CA
- Average daylight in May: 13h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in May: 10h and 54min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The months with the least sunshine are February and December (Average sunshine: 6h and 36min).
Average sunshine days in May
Santa Monica, CA
- Average sunshine days in May: 25.6 days
The month with the most sunshine days is August (27.9 days).
The month with the least sunshine days is February (21.8 days).
Average UV index in May
Santa Monica, CA
- Average UV index in May: 5
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in May
Santa Monica, CA
- Average cloud cover in May: 21
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in May
Santa Monica, 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).
