April weather forecast
London, CA

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Weather in April

April in London, California, is an agreeable spring month, with an average temperature varying between 72.9°F (22.7°C) and 49.3°F (9.6°C).

Temperature

As London welcomes April, the average high-temperature displays a subtle shift, adjusting from an enjoyable 65.8°F (18.8°C) in March to an agreeable 72.9°F (22.7°C). London's nighttime temperatures in April reflect a stark contrast to the day's highs, falling to an average low of 49.3°F (9.6°C).

Humidity

In April, the average relative humidity in London is 56%.

Rainfall

In London, in April, during 7.8 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. In London, during the entire year, the rain falls for 62.1 days and collects up to 13.31" (338mm) of precipitation.

Snowfall

January, March through December are months without snowfall in London.

Daylight

The average length of the day in April in London, California, is 13h and 9min.
On the first day of the month, sunrise is at 6:42 am and sunset at 7:20 pm. On the last day of April, sunrise is at 6:04 am and sunset at 7:45 pm PDT.

Sunshine

In London, the average sunshine in April is 10.8h.

UV index

In London, the average daily maximum UV index in April is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 5 in April transforms into the following instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What are April temperatures in London?

The average high-temperature and low-temperature during April are 72.9°F (22.7°C) and 49.3°F (9.6°C) respectively.

What is the average humidity in April in London?

In April, the average relative humidity in London is 56%.

How many days does it rain in April in London?

In London, during April, the rain falls for 7.8 days and regularly aggregates up to 1.18" (30mm) of precipitation.

When it does not snow in London?

In London, snow does not fall in January, March through December.

What is the average length of the day in April in London?

In April, the average day length in London, California, is 13h and 9min.

When is the sunrise / sunset in April in London?

In April, on the first day of the month, sunrise is at 6:42 am and sunset at 7:20 pm. On the last day of the month, in London, sunrise is at 6:04 am and sunset at 7:45 pm PDT.

How long on average sun shines in April in London?

In London, the average sunshine duration in April is 10.8h.

How high is the UV index in April in London?

In April, the average daily maximum UV index in London, California, is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
London, CA

Average temperature in April - London, CA
  • Average high temperature in April: 72.9°F

The warmest month (with the highest average high temperature) is July (100.4°F).
The month with the lowest average high temperature is December (56.3°F).

  • Average low temperature in April: 49.3°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is December (41.7°F).

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Average pressure in April
London, CA

Average pressure in April - London, CA
  • Average pressure in April: 29.99"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in April
London, CA

Average wind speed in April - London, CA
  • Average wind speed in April: 5.3mph

The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest months (with the lowest average wind speed) are January and December (4.1mph).

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Average humidity in April
London, CA

Average humidity in April - London, CA
  • Average humidity in April: 56%

The month with the highest relative humidity is January (67%).
The months with the lowest relative humidity are July and August (30%).

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Average rainfall in April
London, CA

Average rainfall in April - London, CA
  • Average rainfall in April: 1.18"

The wettest month (with the highest rainfall) is March (2.6").
The driest months (with the least rainfall) are June and August (0.08").

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Average rainfall days in April
London, CA

Average rainfall days in April - London, CA
  • Average rainfall days in April: 7.8 days

The month with the highest number of rainy days is March (11 days).
The month with the least rainy days is August (0.9 days).

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Average snowfall days in April
London, CA

Average snowfall days in April - London, CA
  • Average snowfall days in April: 0 days

The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in April /
Average sunshine in April
London, CA

Average daylight in April / Average sunshine in April - London, CA
  • Average daylight in April: 13h and 1min

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 April: 10h and 5min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

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Average sunshine days in April
London, CA

Average sunshine days in April - London, CA
  • Average sunshine days in April: 21.7 days

The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is March (19.5 days).

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Average UV index in April
London, CA

Average UV index in April - London, CA
  • Average UV index in April: 5

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).

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Average cloud cover in April
London, CA

Average cloud cover in April - London, CA
  • Average cloud cover in April: 22

The month with the most cloud cover is March (Cloud cover 29).
The months with the least cloud cover are July and August (Cloud cover 5).

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Average visibility in April
London, CA

Average visibility in April - London, CA
  • Average visibility in April: 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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London, California, USA

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