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
April
Weather in April
Temperature
As March transitions into April, a subtle temperature shift is observed, with average highs adjusting from a fresh 10.1°C (50.2°F) to a moderate 13.6°C (56.5°F). In the month of April, the temperature generally rests at an average low of 4.8°C (40.6°F).Humidity
In Welwyn, the average relative humidity in April is 81%.Rainfall
In April, in Welwyn, the rain falls for 13.8 days. Throughout April, 16mm (0.63") of precipitation is accumulated. Throughout the year, there are 153.2 rainfall days, and 278mm (10.94") of precipitation is accumulated.Snowfall
In Welwyn, snow does not fall in April through October.Daylight
In April, the average length of the day in Welwyn is 13h and 55min.On the first day of April, sunrise is at 6:34 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 8:23 pm BST.
Sunshine
In Welwyn, the average sunshine in April is 7.7h.UV index
In April, the average daily maximum UV index in Welwyn, United Kingdom, is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In April, the maximum UV index of 3 transforms into these recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Enhance your sun protection with tightly woven, yet airy clothing. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Welwyn in April?
What is the average humidity in April in Welwyn?
How many days does it rain in April in Welwyn?
When it does not snow in Welwyn?
Does it snow in Welwyn in April?
What is the average length of the day in April in Welwyn?
What time are sunrise and sunset in April in Welwyn?
How long on average sun shines in April in Welwyn?
What is the UV index intensity in April in Welwyn?
Average temperature in April
Welwyn, United Kingdom
- Average high temperature in April: 13.6°C
The warmest month (with the highest average high temperature) is July (21.4°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in April: 4.8°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is January (1.6°C).
Average pressure in April
Welwyn, United Kingdom
- Average pressure in April: 1015.7mbar
The months with the highest atmospheric pressure are May and September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1010.3mbar).
Average wind speed in April
Welwyn, United Kingdom
- Average wind speed in April: 13.8km/h
The windiest month (with the highest average wind speed) is February (18.3km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).
Average humidity in April
Welwyn, United Kingdom
- Average humidity in April: 81%
The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is August (75%).
Average rainfall in April
Welwyn, United Kingdom
- Average rainfall in April: 16mm
The wettest month (with the highest rainfall) is June (36mm).
The driest month (with the least rainfall) is September (15mm).
Average rainfall days in April
Welwyn, United Kingdom
- Average rainfall days in April: 13.8 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is September (10.5 days).
Average snowfall in April
Welwyn, United Kingdom
- Average snowfall in April: 0mm
The month with the highest snowfall is February (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in April
Welwyn, United Kingdom
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is February (3.3 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
Welwyn, United Kingdom
- Average daylight in April: 13h and 5min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in April: 7h and 4min
The months with the most sunshine are July and August (Average sunshine: 7h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in April
Welwyn, United Kingdom
- Average sunshine days in April: 13.3 days
The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in April
Welwyn, United Kingdom
- Average UV index in April: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Welwyn, United Kingdom
- Average cloud cover in April: 49
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 48).
Average visibility in April
Welwyn, United Kingdom
- Average visibility in April: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
