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
Half Moon Bay, California, in May witnesses an average high-temperature of a still refreshing 60.4°F (15.8°C), indicating a slight variation from April's 58.6°F (14.8°C). During May, Half Moon Bay perceives a slight decrease in temperature from daytime highs, settling at an average low of 51.4°F (10.8°C).Humidity
In May, the average relative humidity in Half Moon Bay is 79%.Rainfall
In Half Moon Bay, in May, it is raining for 6.8 days, with typically 0.43" (11mm) of accumulated precipitation. In Half Moon Bay, California, during the entire year, the rain falls for 76.8 days and collects up to 8.54" (217mm) of precipitation.Daylight
In May, the average length of the day in Half Moon Bay is 14h and 12min.On the first day of the month, sunrise is at 6:13 am and sunset at 8:00 pm. On the last day of May, in Half Moon Bay, sunrise is at 5:50 am and sunset at 8:24 pm PDT.
Sunshine
In May, the average sunshine in Half Moon Bay is 10.1h.UV index
January through May, July, October through December, with an average maximum UV index of 4, are months with the lowest UV index in Half Moon Bay. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The average daily UV index of 4 in May transforms into the following instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Frequently asked questions
What are the temperatures in Half Moon Bay in May?
What is the average humidity in May in Half Moon Bay?
How much does it rain in Half Moon Bay in May?
What is the average length of the day in May in Half Moon Bay?
What time are sunrise and sunset in May in Half Moon Bay?
How long on average sun shines in May in Half Moon Bay?
When is the lowest UV index in Half Moon Bay?
What is the UV index reading in May in Half Moon Bay?
Average temperature in May
Half Moon Bay, CA
- Average high temperature in May: 60.4°F
The warmest month (with the highest average high temperature) is September (66.9°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in May: 51.4°F
The month with the highest average low temperature is September (56.7°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).
Average pressure in May
Half Moon Bay, CA
- Average pressure in May: 29.99"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
Half Moon Bay, CA
- Average wind speed in May: 9.3mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in May
Half Moon Bay, CA
- Average humidity in May: 79%
The month with the highest relative humidity is August (82%).
The months with the lowest relative humidity are November and December (72%).
Average rainfall in May
Half Moon Bay, CA
- Average rainfall in May: 0.43"
The wettest month (with the highest rainfall) is February (1.61").
The driest months (with the least rainfall) are June and July (0.12").
Average rainfall days in May
Half Moon Bay, CA
- Average rainfall days in May: 6.8 days
The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is June (3 days).
Average daylight in May /
Average sunshine in May
Half Moon Bay, CA
- Average daylight in May: 14h and 1min
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: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in May
Half Moon Bay, CA
- Average sunshine days in May: 20.9 days
The month with the most sunshine days is October (24.6 days).
The months with the least sunshine days are March and August (18.8 days).
Average UV index in May
Half Moon Bay, CA
- Average UV index in May: 4
The months with the highest UV index are June, August and September (UV index 5).
The months with the lowest UV index are January, February, March, April, May, July, October, November and December (UV index 4).
Average cloud cover in May
Half Moon Bay, CA
- Average cloud cover in May: 31
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 18).
Average visibility in May
Half Moon Bay, 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).
Half Moon Bay, California, USA
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