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
April
Weather in April
Temperature
The transition into April marks the average high-temperature at a still moderately hot 29.9°C (85.8°F), differing minimally from March's 29°C (84.2°F). Greenwich records an average low-temperature of 21.7°C (71.1°F) throughout the month of April.Heat index
For April, the heat index is appraised at a fiery hot 37°C (98.6°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.Understanding the heat index involves considering values for shaded locales with light wind. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.
Humidity
The average relative humidity in April in Greenwich is 78%.Rainfall
In Greenwich, in April, it is raining for 21.9 days, with typically 49mm (1.93") of accumulated precipitation. In Greenwich, Jamaica, during the entire year, the rain falls for 265.1 days and collects up to 806mm (31.73") of precipitation.Daylight
The average length of the day in April is 12h and 34min.On the first day of April, sunrise is at 06:01 and sunset at 18:21. On the last day of the month, sunrise is at 05:41 and sunset at 18:29 EST.
Sunshine
The average sunshine in April is 10.4h.UV index
The months with the lowest UV index in Greenwich are January through April, September, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum UV index of 6 in April translates into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Greenwich during April?
What is the average humidity in April in Greenwich?
How many days does it rain in April in Greenwich?
How many hours of daylight does Greenwich have in April?
When are sunrise and sunset in April in Greenwich?
How long on average sun shines in April in Greenwich?
What is the month with the lowest UV index in Greenwich?
How high is the UV index in April in Greenwich?
Average temperature in April
Greenwich, Jamaica
- Average high temperature in April: 29.9°C
The warmest months (with the highest average high temperature) are July and August (31.7°C).
The month with the lowest average high temperature is January (28.4°C).
- Average low temperature in April: 21.7°C
The month with the highest average low temperature is August (23.8°C).
The coldest month (with the lowest average low temperature) is January (20.5°C).
Average pressure in April
Greenwich, Jamaica
- Average pressure in April: 1014.2mbar
The month with the highest atmospheric pressure is January (1015.5mbar).
The month with the lowest atmospheric pressure is October (1011.5mbar).
Average wind speed in April
Greenwich, Jamaica
- Average wind speed in April: 7.3km/h
The windiest month (with the highest average wind speed) is June (9km/h).
The calmest month (with the lowest average wind speed) is November (6.6km/h).
Average humidity in April
Greenwich, Jamaica
- Average humidity in April: 78%
The months with the highest relative humidity are October, November and December (81%).
The months with the lowest relative humidity are March, July and August (77%).
Average rainfall in April
Greenwich, Jamaica
- Average rainfall in April: 49mm
The wettest month (with the highest rainfall) is October (123mm).
The driest month (with the least rainfall) is January (26mm).
Average rainfall days in April
Greenwich, Jamaica
- Average rainfall days in April: 21.9 days
The month with the highest number of rainy days is October (26.5 days).
The month with the least rainy days is February (19.2 days).
Average daylight in April /
Average sunshine in April
Greenwich, Jamaica
- Average daylight in April: 12h and 4min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in April: 10h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in April
Greenwich, Jamaica
- Average sunshine days in April: 4.4 days
The month with the most sunshine days is January (6 days).
The month with the least sunshine days is October (1.5 days).
Average UV index in April
Greenwich, Jamaica
- Average UV index in April: 6
The months with the highest UV index are May, June, July, August and October (UV index 7).
The months with the lowest UV index are January, February, March, April, September, November and December (UV index 6).
Average cloud cover in April
Greenwich, Jamaica
- Average cloud cover in April: 33
The month with the most cloud cover is June (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in April
Greenwich, Jamaica
- 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).
