Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The onset of May brings an average high-temperature of an agreeable 71.2°F (21.8°C), nearly matching the April temperature. Port San Luis records a steady low-temperature average of 51.4°F (10.8°C) during May.Humidity
In May, the average relative humidity is 64%.Rainfall
In Port San Luis, in May, during 3.6 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. Throughout the year, there are 57 rainfall days, and 9.57" (243mm) of precipitation is accumulated.Daylight
In May, the average length of the day 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
In Port San Luis, California, the average sunshine in May is 11.4h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: A maximum high UV index of 5 in May translates into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
How much does it rain in May?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Port San Luis have in May?
What is the UV index reading in May?
Average temperature in May
Port San Luis, 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
Port San Luis, 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
Port San Luis, 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
Port San Luis, 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
Port San Luis, 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
Port San Luis, 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
Port San Luis, 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 2min
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
Port San Luis, 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
Port San Luis, 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
Port San Luis, 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
Port San Luis, 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).
Port San Luis, California, USA
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