May weather forecastCastroville, CA
May
Weather in May
The last month of the spring, May, is another comfortable month in Castroville, California, with an average temperature ranging between min 48.4°F (9.1°C) and max 67.3°F (19.6°C).Temperature
The advent of May reveals an average high-temperature of a still refreshing 67.3°F (19.6°C), showing minimal difference from the prior month. Throughout May, Castroville witnesses a consistent average low-temperature of 48.4°F (9.1°C).Humidity
In Castroville, the average relative humidity in May is 72%.Rainfall
In May, the rain falls for 3.4 days. Throughout May, 0.24" (6mm) of precipitation is accumulated. Throughout the year, there are 53.1 rainfall days, and 5.35" (136mm) of precipitation is accumulated.Daylight
The average length of the day in May is 14h and 9min.On the first day of May, sunrise is at 6:11 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:20 pm PDT.
Sunshine
In May, the average sunshine is 11h.UV index
The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A daily maximum UV index of 4 in May translates into the following instructions:
Be vigilant - Preventing sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Castroville, CA
- Average high temperature in May: 67.3°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (57.6°F).
- Average low temperature in May: 48.4°F
The month with the highest average low temperature is September (54.5°F).
The coldest month (with the lowest average low temperature) is December (43.7°F).
Average pressure in May
Castroville, CA
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in May
Castroville, CA
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is May (6.5mph).
The calmest month (with the lowest average wind speed) is September (4.9mph).
Average humidity in May
Castroville, CA
- Average humidity in May: 72%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (66%).
Average rainfall in May
Castroville, CA
- Average rainfall in May: 0.24"
The wettest month (with the highest rainfall) is December (1.14").
The driest months (with the least rainfall) are June, July, August and September (0.04").
Average rainfall days in May
Castroville, CA
- Average rainfall days in May: 3.4 days
The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is August (0.7 days).
Average daylight in May /
Average sunshine in May
Castroville, CA
- Average daylight in May: 14h and 6min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in May: 11h
The months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6h).
Average sunshine days in May
Castroville, CA
- Average sunshine days in May: 26.3 days
The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is March (20 days).
Average UV index in May
Castroville, CA
- Average UV index in May: 4
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in May
Castroville, CA
- Average cloud cover in May: 23
The month with the most cloud cover is March (Cloud cover 33).
The months with the least cloud cover are July and September (Cloud cover 10).
Average visibility in May
Castroville, 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).
