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 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
With the arrival of April, Heilbron notices a mild change in the average high-temperature, sliding from March's 27.1°C (80.8°F) to a still moderately hot 23.4°C (74.1°F). Nighttime temperatures throughout April register a significant deviation from the day's highs, averaging at a cool 11.3°C (52.3°F).Humidity
In Heilbron, the average relative humidity in April is 55%.Rainfall
In April, the rain falls for 7.5 days. Throughout April, 28mm (1.1") of precipitation is accumulated. Throughout the year, there are 76.4 rainfall days, and 266mm (10.47") of precipitation is accumulated.Daylight
In Heilbron, the average length of the day in April is 11h and 26min.On the first day of April, sunrise is at 06:17 and sunset at 18:05. On the last day of the month, sunrise is at 06:33 and sunset at 17:37 SAST.
Sunshine
In April, the average sunshine is 7.8h.UV index
In Heilbron, South Africa, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high daily UV index of 5 during April translates into the following directions:
Ensure safety - Recommendations to avert sunburn are presented. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Heilbron in April?
What is the average humidity in April?
How many days does it rain in April?
What is the average length of the day in April?
When are sunrise and sunset in April?
How long on average sun shines in April?
What is the UV index intensity in April?
Average temperature in April
Heilbron, South Africa
- Average high temperature in April: 23.4°C
The warmest month (with the highest average high temperature) is January (28.8°C).
The months with the lowest average high temperature are June and July (17.8°C).
- Average low temperature in April: 11.3°C
The months with the highest average low temperature are January and December (16.8°C).
The coldest month (with the lowest average low temperature) is July (5.1°C).
Average pressure in April
Heilbron, South Africa
- Average pressure in April: 1019mbar
The month with the highest atmospheric pressure is July (1024.8mbar).
The month with the lowest atmospheric pressure is January (1013mbar).
Average wind speed in April
Heilbron, South Africa
- Average wind speed in April: 9.7km/h
The windiest month (with the highest average wind speed) is November (13.7km/h).
The calmest month (with the lowest average wind speed) is May (8.7km/h).
Average humidity in April
Heilbron, South Africa
- Average humidity in April: 55%
The month with the highest relative humidity is February (60%).
The month with the lowest relative humidity is September (30%).
Average rainfall in April
Heilbron, South Africa
- Average rainfall in April: 28mm
The wettest month (with the highest rainfall) is December (57mm).
The driest months (with the least rainfall) are July and August (2mm).
Average rainfall days in April
Heilbron, South Africa
- Average rainfall days in April: 7.5 days
The month with the highest number of rainy days is December (12.5 days).
The month with the least rainy days is August (1 days).
Average daylight in April /
Average sunshine in April
Heilbron, South Africa
- Average daylight in April: 11h and 2min
The month with the longest days is December (Average daylight: 13h and 48min).
The month with the shortest days is June (Average daylight: 10h and 24min).
- Average sunshine in April: 7h and 5min
The month with the most sunshine is October (Average sunshine: 11h and 48min).
The month with the least sunshine is August (Average sunshine: 7h and 24min).
Average sunshine days in April
Heilbron, South Africa
- Average sunshine days in April: 21.2 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is December (16.9 days).
Average UV index in April
Heilbron, South Africa
- Average UV index in April: 5
The months with the highest UV index are January, February, October, November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in April
Heilbron, South Africa
- Average cloud cover in April: 18
The month with the most cloud cover is January (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in April
Heilbron, South Africa
- Average visibility in April: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Heilbron, South Africa
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