Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The transition from August to September brings an average high-temperature of a still warm 29.4°C (84.9°F), barely different from August's 29.7°C (85.5°F). Nighttime temperatures hover around an average low of 26.2°C (79.2°F) in September, a slight descent from daytime highs.Heat index
September's average heat index is calculated to be a torrid 35°C (95°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.The standards for the heat index are set for locations in shade and under light breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
In Runaway Bay, the average relative humidity in September is 78%.Rainfall
In Runaway Bay, during September, the rain falls for 18.2 days and regularly aggregates up to 88mm (3.46") of precipitation. Throughout the year, in Runaway Bay, there are 219.4 rainfall days, and 663mm (26.1") of precipitation is accumulated.Snowfall
The only month with snowfall is September. The month with the most snowfall in Runaway Bay is September, when snow falls for 0.1 days and typically aggregates up to 1mm (0.04") of snow.Sea temperature
June through November, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Runaway Bay, Jamaica.Note: In water temperatures ranging between 25°C (77°F) and 29°C (84.2°F), activities such as swimming and diving become highly pleasurable for long durations.
Daylight
The average length of the day in September is 12h and 14min.On the first day of the month, sunrise is at 05:54 and sunset at 18:23. On the last day of September, sunrise is at 05:59 and sunset at 17:58 EST.
Sunshine
August and September, with an average of 11.3h of sunshine, are months with the most sunshine.UV index
April through December, with an average maximum UV index of 7, are months with the highest UV index in Runaway Bay. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 7 in September translates into the following instructions:
Ward off overexposure. Defence against solar harm is crucial. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
How hot is it in Runaway Bay in September?
What is the average humidity in September in Runaway Bay?
How many days does it rain in September in Runaway Bay?
What is the snowiest month in Runaway Bay?
When does it start to snow in Runaway Bay?
What months are the sea warmest in Runaway Bay?
How warm is the water in September in Runaway Bay?
How many hours of daylight does Runaway Bay have in September?
When is the sunrise / sunset in September in Runaway Bay?
What are the months with the most sunshine in Runaway Bay?
How many hours of sunshine does Runaway Bay have in September?
When is the highest UV index in Runaway Bay?
How high is the UV index in September in Runaway Bay?
Average temperature in September
Runaway Bay, Jamaica
- Average high temperature in September: 29.4°C
The warmest month (with the highest average high temperature) is August (29.7°C).
The months with the lowest average high temperature are February and March (26.6°C).
- Average low temperature in September: 26.2°C
The month with the highest average low temperature is August (26.3°C).
The coldest month (with the lowest average low temperature) is March (23.1°C).
Average pressure in September
Runaway Bay, Jamaica
- Average pressure in September: 1012.4mbar
The month with the highest atmospheric pressure is January (1015.7mbar).
The month with the lowest atmospheric pressure is October (1011.6mbar).
Average wind speed in September
Runaway Bay, Jamaica
- Average wind speed in September: 13.3km/h
The windiest month (with the highest average wind speed) is June (17.9km/h).
The calmest month (with the lowest average wind speed) is October (13.2km/h).
Average humidity in September
Runaway Bay, Jamaica
- Average humidity in September: 78%
The months with the highest relative humidity are May, June, November and December (79%).
The month with the lowest relative humidity is March (77%).
Average rainfall in September
Runaway Bay, Jamaica
- Average rainfall in September: 88mm
The wettest month (with the highest rainfall) is October (95mm).
The driest month (with the least rainfall) is February (27mm).
Average rainfall days in September
Runaway Bay, Jamaica
- Average rainfall days in September: 18.2 days
The month with the highest number of rainy days is October (23.9 days).
The month with the least rainy days is February (15 days).
Average snowfall in September
Runaway Bay, Jamaica
- Average snowfall in September: 1mm
The month with the highest snowfall is September (1mm).
The months with the least snowfall are January, February, March, April, May, June, July, August, October, November and December (0mm).
Average snowfall days in September
Runaway Bay, Jamaica
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average sea temperature in September
Runaway Bay, Jamaica
- Average sea temperature in September: 29°C
The best months for swimming (with the highest average sea temperature) are June, July, August, September, October and November (29°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (27°C).
Average daylight in September /
Average sunshine in September
Runaway Bay, Jamaica
- Average daylight in September: 12h and 1min
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 0min).
- Average sunshine in September: 11h and 2min
The months with the most sunshine are August and September (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Runaway Bay, Jamaica
- Average sunshine days in September: 3.6 days
The month with the most sunshine days is January (9.6 days).
The month with the least sunshine days is May (3.4 days).
Average UV index in September
Runaway Bay, Jamaica
- Average UV index in September: 7
The months with the highest UV index are April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February and March (UV index 6).
Average cloud cover in September
Runaway Bay, Jamaica
- Average cloud cover in September: 22
The months with the most cloud cover are November and December (Cloud cover 33).
The month with the least cloud cover is September (Cloud cover 22).
Average visibility in September
Runaway Bay, Jamaica
- Average visibility in September: 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).
Runaway Bay, Jamaica
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