May weather forecast and climate
Mission Viejo, CA

The calm waters on Lake Mission Viejo, California,
The calm waters on Lake Mission Viejo, California,

Weather in May

The last month of the spring, May, is also an agreeable month in Mission Viejo, California, with average temperature fluctuating between 70.2°F (21.2°C) and 55.2°F (12.9°C).

Temperature

In Mission Viejo, the average high-temperature is relatively the same as in April - a still agreeable 70.2°F (21.2°C). The average low-temperature, in May, is 55.2°F (12.9°C).

Humidity

Months with the highest humidity are May and June, with an average relative humidity of 70%.

Rainfall

In Mission Viejo, it is raining for 5.8 days, with typically 0.35" (9mm) of accumulated precipitation. Throughout the year, there are 64.1 rainfall days, and 5.67" (144mm) of precipitation is accumulated.

Daylight

In May, the average length of the day is 13.9h.

Sunshine

In Mission Viejo, the average sunshine in May is 10.9h.

UV index

In May, the average daily maximum UV index in Mission Viejo is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for average individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
[Resources]

FAQ

What is the temperature in May in Mission Viejo?

The average high-temperature, in May, is 70.2°F (21.2°C), while the average low-temperature is 55.2°F (12.9°C).

What is the most humid month in Mission Viejo?

May and June, with an average relative humidity of 70%, are most humid months.

What is the average humidity in May in Mission Viejo?

In Mission Viejo, the average relative humidity in May is 70%.

How many days does it rain in May in Mission Viejo?

In Mission Viejo, California, during May, the rain falls for 5.8 days and regularly aggregates up to 0.35" (9mm) of precipitation.

What is the average length of the day in May in Mission Viejo?

In Mission Viejo, California, the average length of the day in May is 13.9h.

How many hours of sunshine does Mission Viejo have in May?

In Mission Viejo, the average sunshine in May is 10.9h.

How high is the UV index in May in Mission Viejo?

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to the UV radiation.

Average temperature in May
Mission Viejo, CA

Average temperature in May - Mission Viejo, CA
  • Average high temperature in May: 70.2°F

The warmest month (with the highest average high temperature) is August (80.8°F).
The month with the lowest average high temperature is December (63°F).

  • Average low temperature in May: 55.2°F

The month with the highest average low temperature is August (64°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).

[Resources]

Average pressure in May
Mission Viejo, CA

Average pressure in May - Mission Viejo, CA
  • Average pressure in May: 29.92"

The month with the highest atmospheric pressure is January (30.1").
Months with the lowest atmospheric pressure are June and September (29.88").

[Resources]

Average wind speed in May
Mission Viejo, CA

Average wind speed in May - Mission Viejo, CA
  • Average wind speed in May: 5.7mph

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

[Resources]

Average humidity in May
Mission Viejo, CA

Average humidity in May - Mission Viejo, CA
  • Average humidity in May: 70%

Months with the highest relative humidity are May and June (70%).
The month with the lowest relative humidity is November (56%).

[Resources]

Average rainfall in May
Mission Viejo, CA

Average rainfall in May - Mission Viejo, CA
  • Average rainfall in May: 0.35"

The wettest month (with the highest rainfall) is December (0.98").
The driest month (with the least rainfall) is June (0.08").

[Resources]

Average rainfall days in May
Mission Viejo, CA

Average rainfall days in May - Mission Viejo, CA
  • Average rainfall days in May: 5.8 days

The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is June (2.3 days).

[Resources]

Average daylight in May /
Average sunshine in May
Mission Viejo, CA

Average daylight in May / Average sunshine in May - Mission Viejo, CA
  • Average daylight in May: 13.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in May: 10.9h

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.6h).

[Resources]

Average sunshine days in May
Mission Viejo, CA

Average sunshine days in May - Mission Viejo, CA
  • Average sunshine days in May: 19.5 days

Months with the most sunshine days are January and August (24.4 days).
The month with the least sunshine days is May (19.5 days).

[Resources]

Average UV index in May
Mission Viejo, CA

Average UV index in May - Mission Viejo, CA
  • Average UV index in May: 5

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 4).

[Resources]

Average cloud cover in May
Mission Viejo, CA

Average cloud cover in May - Mission Viejo, CA
  • Average cloud cover in May: 22

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).

[Resources]

Average visibility in May
Mission Viejo, CA

Average visibility in May - Mission Viejo, CA
  • Average visibility in May: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

[Resources]