May weather forecast
Westminster, CA

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Weather in May

The last month of the spring, May, is another pleasant month in Westminster, California, with an average temperature ranging between min 56.8°F (13.8°C) and max 69.4°F (20.8°C).

Temperature

Westminster marks the start of May with an average high-temperature of a still agreeable 69.4°F (20.8°C), hinting at a slight fluctuation from April's 68.2°F (20.1°C). Westminster experiences an average temperature drop to a refreshing 56.8°F (13.8°C) during May nights.

Humidity

In May, the average relative humidity in Westminster is 68%.

Rainfall

May is the last month it rains in Westminster. During 1.5 rainfall days, in May, Westminster aggregates 0.04" (1mm) of precipitation. In Westminster, during the entire year, the rain falls for 25.2 days and collects up to 1.57" (40mm) of precipitation.

Daylight

In May, the average length of the day in Westminster, California, is 13h and 56min.
On the first day of the month, sunrise is at 6:02 am and sunset at 7:35 pm. On the last day of May, sunrise is at 5:42 am and sunset at 7:57 pm PDT.

Sunshine

In May, the average sunshine in Westminster is 11.2h.

UV index

In Westminster, California, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 5 in May interprets into the following advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What are May temperatures in Westminster?

Westminster in May has an average high-temperature of 69.4°F (20.8°C) and an average low-temperature of 56.8°F (13.8°C).

What is the average humidity in May in Westminster?

In May, the average relative humidity in Westminster, California, is 68%.

What is the last month it rains in Westminster?

May is the last month it rains. During 1.5 rainfall days, in May, Westminster aggregates 0.04" (1mm) of precipitation.

What is the average length of the day in May in Westminster?

In May, the average day length in Westminster, California, is 13h and 56min.

When is the sunrise / sunset in May in Westminster?

In May, on the first day of the month, sunrise is at 6:02 am and sunset at 7:35 pm. On the last day of the month, in Westminster, California, sunrise is at 5:42 am and sunset at 7:57 pm PDT.

How long on average sun shines in May in Westminster?

The average sunshine duration in May in Westminster, California, is 11.2h.

How high is the UV index in May in Westminster?

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Westminster, CA

Average temperature in May - Westminster, CA
  • Average high temperature in May: 69.4°F

The warmest month (with the highest average high temperature) is August (78.6°F).
The month with the lowest average high temperature is December (63.1°F).

  • Average low temperature in May: 56.8°F

The month with the highest average low temperature is September (65.1°F).
The coldest month (with the lowest average low temperature) is February (52°F).

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Average pressure in May
Westminster, CA

Average pressure in May - Westminster, CA
  • Average pressure in May: 29.93"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).

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Average wind speed in May
Westminster, CA

Average wind speed in May - Westminster, CA
  • Average wind speed in May: 6.3mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are September and October (5.2mph).

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Average humidity in May
Westminster, CA

Average humidity in May - Westminster, CA
  • Average humidity in May: 68%

The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (56%).

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Average rainfall in May
Westminster, CA

Average rainfall in May - Westminster, CA
  • Average rainfall in May: 0.04"

The wettest month (with the highest rainfall) is December (0.35").
The driest month (with the least rainfall) is June (0").

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Average rainfall days in May
Westminster, CA

Average rainfall days in May - Westminster, CA
  • Average rainfall days in May: 1.5 days

The month with the highest number of rainy days is March (4.6 days).
The month with the least rainy days is June (0.7 days).

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Average daylight in May /
Average sunshine in May
Westminster, CA

Average daylight in May / Average sunshine in May - Westminster, CA
  • Average daylight in May: 13h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in May: 11h and 1min

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 42min).

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Average sunshine days in May
Westminster, CA

Average sunshine days in May - Westminster, CA
  • Average sunshine days in May: 29 days

The months with the most sunshine days are May and June (29 days).
The month with the least sunshine days is February (24.4 days).

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Average UV index in May
Westminster, CA

Average UV index in May - Westminster, CA
  • Average UV index in May: 5

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

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Average cloud cover in May
Westminster, CA

Average cloud cover in May - Westminster, CA
  • Average cloud cover in May: 19

The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in May
Westminster, CA

Average visibility in May - Westminster, 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).

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Westminster, California, USA

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