Weather in September
Temperature
The months of July through September see the peak of St Johnston Village's temperatures, averaging a high of 31°C (87.8°F).Rainfall
September is the month with the most rainfall. Rain falls for 17 days and accumulates 140mm (5.51") of precipitation.Sea temperature
September is the month with the warmest seawater, with an average sea temperature of 29°C (84.2°F).Note: Surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as excellent and extremely agreeable for enduring enjoyment in water activities.
Daylight
In St Johnston Village, the average length of the day in September is 12h and 14min.On the first day of the month, sunrise is at 05:53 and sunset at 18:20. On the last day of September, in St Johnston Village, sunrise is at 05:57 and sunset at 17:56 AST.
Sunshine
September through December, with an average of 7h of sunshine, are months with the least sunshine in St Johnston Village, Antigua and Barbuda.UV index
March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an extreme threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 12 during September leads to these instructions:
Take all necessary precautions, as unprotected skin can burn in minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. A hat with a broad brim is indispensable, filtering out up to half of UV rays. After a swim or an outdoor workout, generously apply and reapply a broad-spectrum SPF 30+ sunscreen. Be mindful! Sand and water reflections can up the Sun's UV exposure.
Frequently asked questions
What is the warmest month in St Johnston Village?
Is it hot in St Johnston Village during September?
What is the wettest month in St Johnston Village?
How much does it rain in St Johnston Village in September?
What month is the sea warmest in St Johnston Village?
How warm is the water in September in St Johnston Village?
How many hours of daylight does St Johnston Village have in September?
When are sunrise and sunset in September in St Johnston Village?
What are the months with the least sunshine in St Johnston Village?
How many hours of sunshine does St Johnston Village have in September?
What is the month with the highest UV index in St Johnston Village?
How high is the UV index in September in St Johnston Village?
Average temperature in September
St Johnston Village, Antigua and Barbuda
- Average high temperature in September: 31°C
The warmest months (with the highest average high temperature) are July, August and September (31°C).
The months with the lowest average high temperature are January and February (28°C).
- Average low temperature in September: 25°C
The months with the highest average low temperature are June, July, August and September (25°C).
The coldest months (with the lowest average low temperature) are January, February and March (22°C).
Average rainfall in September
St Johnston Village, Antigua and Barbuda
- Average rainfall in September: 140mm
The wettest month (with the highest rainfall) is September (140mm).
The driest month (with the least rainfall) is February (37mm).
Average rainfall days in September
St Johnston Village, Antigua and Barbuda
- Average rainfall days in September: 17 days
The months with the highest number of rainy days are September, October, November and December (17 days).
The month with the least rainy days is April (11 days).
Average sea temperature in September
St Johnston Village, Antigua and Barbuda
- Average sea temperature in September: 29°C
The best month for swimming (with the highest average sea temperature) is September (29°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (26°C).
Average daylight in September /
Average sunshine in September
St Johnston Village, Antigua and Barbuda
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in September: 7h
The months with the most sunshine are January, February, March, April, May, June, July and August (Average sunshine: 8h).
The months with the least sunshine are September, October, November and December (Average sunshine: 7h).
Average UV index in September
St Johnston Village, Antigua and Barbuda
- Average UV index in September: 12
The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The months with the lowest UV index are January and December (UV index 8).
St Johnston Village, Antigua and Barbuda
Weather forecast for your location
2. Allow the app to use your location
