Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
August
Weather in August
Temperature
The months of July and August see the peak of Greenwich's temperatures, averaging a high of 31.7°C (89.1°F).Heat index
The average heat index in August is appraised at an extremely hot 42°C (107.6°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.It is important to note that the heat index values are for shaded areas and light wind scenarios. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.
Humidity
The months with the lowest humidity are March, July and August, with an average relative humidity of 77%.Rainfall
In Greenwich, in August, during 24.9 rainfall days, 80mm (3.15") of precipitation is typically accumulated. In Greenwich, during the entire year, the rain falls for 265.1 days and collects up to 806mm (31.73") of precipitation.Daylight
In Greenwich, the average length of the day in August is 12h and 43min.On the first day of the month, sunrise is at 05:46 and sunset at 18:42. On the last day of August, in Greenwich, sunrise is at 05:53 and sunset at 18:22 EST.
Sunshine
The month with the most sunshine in Greenwich is August, with an average of 11h of sunshine.UV index
The months with the highest UV index in Greenwich are May through August and October, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 7 in August interprets into the following advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the warmest month in Greenwich?
How hot is it in Greenwich in August?
What is the least humid month in Greenwich?
What is the average humidity in August in Greenwich?
How much does it rain in Greenwich in August?
How many hours of daylight does Greenwich have in August?
When is the sunrise / sunset in August in Greenwich?
What month has the most sunshine in Greenwich?
How many hours of sunshine does Greenwich have in August?
What is the month with the highest UV index in Greenwich?
What is the UV index intensity in August in Greenwich?
Average temperature in August
Greenwich, Jamaica
- Average high temperature in August: 31.7°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 August: 23.8°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 August
Greenwich, Jamaica
- Average pressure in August: 1013.4mbar
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 August
Greenwich, Jamaica
- Average wind speed in August: 7.8km/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 August
Greenwich, Jamaica
- Average humidity in August: 77%
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 August
Greenwich, Jamaica
- Average rainfall in August: 80mm
The wettest month (with the highest rainfall) is October (123mm).
The driest month (with the least rainfall) is January (26mm).
Average rainfall days in August
Greenwich, Jamaica
- Average rainfall days in August: 24.9 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 August /
Average sunshine in August
Greenwich, Jamaica
- Average daylight in August: 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 August: 11h and 0min
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 August
Greenwich, Jamaica
- Average sunshine days in August: 1.7 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 August
Greenwich, Jamaica
- Average UV index in August: 7
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 August
Greenwich, Jamaica
- Average cloud cover in August: 31
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 August
Greenwich, Jamaica
- Average visibility in August: 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).
