May weather forecastSan Luis Obispo, CA
May
Weather in May
May, the last month of the spring in San Luis Obispo, is an agreeable month, with an average temperature varying between 51.4°F (10.8°C) and 71.2°F (21.8°C).Temperature
In May, San Luis Obispo experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 67.8°F (19.9°C) in April to a pleasant 71.2°F (21.8°C). Throughout May nights, San Luis Obispo experiences a consistent temperature average of 51.4°F (10.8°C).Humidity
In May, the average relative humidity is 64%.Rainfall
In San Luis Obispo, in May, it is raining for 3.6 days, with typically 0.28" (7mm) of accumulated precipitation. In San Luis Obispo, California, during the entire year, the rain falls for 57 days and collects up to 9.57" (243mm) of precipitation.Daylight
In San Luis Obispo, the average length of the day in May is 14h and 2min.On the first day of May, sunrise is at 6:10 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:11 pm PDT.
Sunshine
The average sunshine in May is 11.4h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 5 during May leads to these instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
San Luis Obispo, CA
- Average high temperature in May: 71.2°F
The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (60.3°F).
- Average low temperature in May: 51.4°F
The month with the highest average low temperature is September (60.3°F).
The coldest month (with the lowest average low temperature) is February (45.7°F).
Average pressure in May
San Luis Obispo, CA
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in May
San Luis Obispo, CA
- Average wind speed in May: 6.8mph
The windiest months (with the highest average wind speed) are April and May (6.8mph).
The calmest months (with the lowest average wind speed) are August and September (5.3mph).
Average humidity in May
San Luis Obispo, CA
- Average humidity in May: 64%
The month with the highest relative humidity is March (69%).
The months with the lowest relative humidity are September and October (57%).
Average rainfall in May
San Luis Obispo, CA
- Average rainfall in May: 0.28"
The wettest month (with the highest rainfall) is March (2.01").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in May
San Luis Obispo, CA
- Average rainfall days in May: 3.6 days
The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is August (0.6 days).
Average daylight in May /
Average sunshine in May
San Luis Obispo, CA
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in May: 11h and 24min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).
Average sunshine days in May
San Luis Obispo, CA
- Average sunshine days in May: 26.1 days
The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is February (19.1 days).
Average UV index in May
San Luis Obispo, CA
- Average UV index in May: 5
The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is February (UV index 3).
Average cloud cover in May
San Luis Obispo, CA
- Average cloud cover in May: 16
The month with the most cloud cover is March (Cloud cover 28).
The months with the least cloud cover are August and September (Cloud cover 6).
Average visibility in May
San Luis Obispo, 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).
