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
May brings an average high-temperature of a still agreeable 69.6°F (20.9°C), showing a slight difference from April's 68.4°F (20.2°C). Aliso Viejo's average low-temperature is measured at a fresh 55.2°F (12.9°C) during May.Humidity
In May, the average relative humidity is 70%.Rainfall
In Aliso Viejo, in May, it is raining for 5.6 days, with typically 0.35" (9mm) of accumulated precipitation. In Aliso Viejo, during the entire year, the rain falls for 66.3 days and collects up to 5.67" (144mm) of precipitation.Daylight
In May, the average length of the day is 13h and 55min.On the first day of the month, sunrise is at 6:01 am and sunset at 7:34 pm. On the last day of May, sunrise is at 5:41 am and sunset at 7:55 pm PDT.
Sunshine
In May, the average sunshine is 11h.UV index
In Aliso Viejo, California, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 5 in May, converts into the following recommendations:
Act with care - The need to guard against sun damage is communicated. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How much does it rain in Aliso Viejo in May?
What is the average length of the day in May?
When are sunrise and sunset in May?
How long on average sun shines in May in Aliso Viejo?
What is the UV index intensity in May?
Average temperature in May
Aliso Viejo, CA
- Average high temperature in May: 69.6°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 (62.8°F).
- Average low temperature in May: 55.2°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 (49.6°F).
Average pressure in May
Aliso Viejo, CA
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Aliso Viejo, CA
- Average wind speed in May: 5.8mph
The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest months (with the lowest average wind speed) are August, September and October (4.7mph).
Average humidity in May
Aliso Viejo, CA
- Average humidity in May: 70%
The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (56%).
Average rainfall in May
Aliso Viejo, CA
- Average rainfall in May: 0.35"
The wettest month (with the highest rainfall) is December (0.87").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in May
Aliso Viejo, CA
- Average rainfall days in May: 5.6 days
The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is June (2.6 days).
Average daylight in May /
Average sunshine in May
Aliso Viejo, CA
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 11h and 0min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in May
Aliso Viejo, CA
- Average sunshine days in May: 19.7 days
The month with the most sunshine days is January (24.1 days).
The month with the least sunshine days is February (19.6 days).
Average UV index in May
Aliso Viejo, 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, March, November and December (UV index 4).
Average cloud cover in May
Aliso Viejo, CA
- Average cloud cover in May: 21
The months with the most cloud cover are March and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in May
Aliso Viejo, 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).
Aliso Viejo, California, USA
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