Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The arrival of April brings a soft temperature shift, with the average high-temperature nudging from a cool 54.9°F (12.7°C) in March to a comfortable 61.7°F (16.5°C). In April, the temperature drops to an average of 44.2°F (6.8°C) at night.Humidity
In Swansea, California, the average relative humidity in April is 31%.Rainfall
In Swansea, in April, it is raining for 5.3 days, with typically 0.51" (13mm) of accumulated precipitation. Throughout the year, in Swansea, there are 48 rainfall days, and 4.92" (125mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. April is the last month it regularly snows in Swansea. During 0.4 snowfall days, in April, Swansea aggregates 0.12" (3mm) of snow. In Swansea, during the entire year, snow falls for 4.5 days and aggregates up to 3.07" (78mm) of snow.Daylight
In April, the average length of the day is 13h and 9min.On the first day of April, sunrise is at 6:36 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 7:39 pm PDT.
Sunshine
In April, the average sunshine is 11.5h.UV index
In April, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 4 in April transforms into the following instructions:
Be vigilant - Preventing sunburn is recommended. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures?
What is the average humidity in April?
How many days does it rain in April?
What is the last month it snows in Swansea?
What is the average length of the day in April?
What time are sunrise and sunset in April?
How long on average sun shines in April?
How high is the UV index in April?
Average temperature in April
Swansea, CA
- Average high temperature in April: 61.7°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (46.9°F).
- Average low temperature in April: 44.2°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is December (31.5°F).
Average pressure in April
Swansea, CA
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in April
Swansea, CA
- Average wind speed in April: 7.6mph
The windiest months (with the highest average wind speed) are April, May and June (7.6mph).
The calmest month (with the lowest average wind speed) is November (5.8mph).
Average humidity in April
Swansea, CA
- Average humidity in April: 31%
The month with the highest relative humidity is December (47%).
The month with the lowest relative humidity is August (19%).
Average rainfall in April
Swansea, CA
- Average rainfall in April: 0.51"
The wettest month (with the highest rainfall) is December (0.67").
The driest months (with the least rainfall) are June and September (0.16").
Average rainfall days in April
Swansea, CA
- Average rainfall days in April: 5.3 days
The month with the highest number of rainy days is March (5.7 days).
The month with the least rainy days is September (2.3 days).
Average snowfall in April
Swansea, CA
- Average snowfall in April: 0.12"
The month with the highest snowfall is December (1.18").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Swansea, CA
- Average snowfall days in April: 0.4 days
The month with the highest number of snowfall days is December (1.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Swansea, 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: 11h and 3min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The months with the least sunshine are January, February and December (Average sunshine: 7h and 18min).
Average sunshine days in April
Swansea, CA
- Average sunshine days in April: 22 days
The month with the most sunshine days is October (27.7 days).
The month with the least sunshine days is July (20 days).
Average UV index in April
Swansea, CA
- Average UV index in April: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are November and December (UV index 2).
Average cloud cover in April
Swansea, CA
- Average cloud cover in April: 13
The month with the most cloud cover is January (Cloud cover 16).
The months with the least cloud cover are August and September (Cloud cover 5).
Average visibility in April
Swansea, 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).
Swansea, California, USA
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