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, Waterloo's average high-temperature registers at a still warm 27.1°C (80.8°F), indicating a subtle variation from the previous month. April nights cool to an average low-temperature of 26°C (78.8°F), a marginal decrease from its daytime equivalent.Heat index
The heat index value for April is calculated to be a hot 30°C (86°F). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', quantifies the warmth felt when relative humidity is considered. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially vital to children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Humidity
In April, the average relative humidity is 77%.Rainfall
In April, the rain falls for 12.4 days. Throughout April, 17mm (0.67") of precipitation is accumulated. In Waterloo, during the entire year, the rain falls for 164.4 days and collects up to 289mm (11.38") of precipitation.Daylight
The average length of the day in April is 12h and 26min.On the first day of April, sunrise is at 06:00 and sunset at 18:16. On the last day of the month, sunrise is at 05:43 and sunset at 18:19 AST.
Sunshine
In Waterloo, the average sunshine in April is 10.1h.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Waterloo. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.Note: In April, the maximum UV index of 7 suggests this advice:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | 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?
How many hours of daylight does Waterloo have in April?
What time are sunrise and sunset in April?
How many hours of sunshine does Waterloo have in April?
What are the months with the highest UV index?
What are the months with the lowest UV index?
What is the UV index reading in April?
Average temperature in April
Waterloo, Saint Vincent and the Grenadines
- Average high temperature in April: 27.1°C
The warmest month (with the highest average high temperature) is September (28.7°C).
The month with the lowest average high temperature is February (26.3°C).
- Average low temperature in April: 26°C
The month with the highest average low temperature is September (27.9°C).
The coldest month (with the lowest average low temperature) is January (25.3°C).
Average pressure in April
Waterloo, Saint Vincent and the Grenadines
- Average pressure in April: 1013.8mbar
The month with the highest atmospheric pressure is June (1014.6mbar).
The month with the lowest atmospheric pressure is November (1011.1mbar).
Average wind speed in April
Waterloo, Saint Vincent and the Grenadines
- Average wind speed in April: 24.9km/h
The windiest month (with the highest average wind speed) is February (28.4km/h).
The calmest month (with the lowest average wind speed) is September (19.7km/h).
Average humidity in April
Waterloo, Saint Vincent and the Grenadines
- Average humidity in April: 77%
The months with the highest relative humidity are May, June and July (78%).
The month with the lowest relative humidity is February (75%).
Average rainfall in April
Waterloo, Saint Vincent and the Grenadines
- Average rainfall in April: 17mm
The wettest month (with the highest rainfall) is November (40mm).
The driest month (with the least rainfall) is February (12mm).
Average rainfall days in April
Waterloo, Saint Vincent and the Grenadines
- Average rainfall days in April: 12.4 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is February (8.7 days).
Average daylight in April /
Average sunshine in April
Waterloo, Saint Vincent and the Grenadines
- Average daylight in April: 12h and 2min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).
- Average sunshine in April: 10h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in April
Waterloo, Saint Vincent and the Grenadines
- Average sunshine days in April: 13.8 days
The month with the most sunshine days is March (16.7 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in April
Waterloo, Saint Vincent and the Grenadines
- Average UV index in April: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in April
Waterloo, Saint Vincent and the Grenadines
- Average cloud cover in April: 40
The month with the most cloud cover is June (Cloud cover 44).
The months with the least cloud cover are February and September (Cloud cover 35).
Average visibility in April
Waterloo, Saint Vincent and the Grenadines
- 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).
Waterloo, Saint Vincent and the Grenadines
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