Normal weather for Saint John’s in September
It's hot in September in Saint John’s with an average temperature of 33°C. Temperatures this month range from a low of 32°C to a high of 33°C. At night, you can expect temperatures between 27°C and 28°C.
In September, there is an average of 110 mm of precipitation, spread over 12 days. The wind speed is around 5 Bft, mostly coming from the Southeast.
Saint John’s in September |
London | ||
|---|---|---|---|
 Average Temperature |
33°C | 20°C | |
 High Temp |
33°C | 22°C | |
| Low Temp |
32°C | 17°C | |
 Total Precipitation |
110 mm | 44 mm | |
| Rainy Days |
12 days | 8 days | |
Start of September
The month of September starts in Saint John’s with hot temperatures, averaging around 33°C during the day and nights close to 28°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Mid-September
By mid-September, the average daytime temperature stays the same at 33°C, with nights close to 28°C. There might be a few showers during this period, but plenty of dry days with sunshine too. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
End of September
By the end of September, the average daytime temperature in Saint John’s will be around 33°C, with nights close to 28°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Saint John’s?
After some sun? Then September isn’t the best time to be in Saint John’s. The temperature is pleasant, but there’s too much chance of rain this month.
The hurricane season in Saint John’s runs from June to November.
Temperature records for Saint John’s in September
With 35°C, Saint John’s hit the highest temperature in the last 10 years in September 2023. The lowest daytime temperature in this month was 28°C in 2022. The extreme night temperatures ranged from a low of 23°C to a high of 29°C.
Check out the climate of Saint John’s for all months and discover the best travel time
August
Daily Temperature in September in Saint John’s
This chart shows the average daily temperatures, both day and night, for each day in September in Saint John’s, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Saint John’s
The chart below shows the average daily precipitation in September for Saint John’s, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 12 days of rain in Saint John’s.
Daily UV Index in September in Saint John’s
This chart shows the average daily UV index in September in Saint John’s, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Saint John’s Over the Years
This chart shows the average temperature in September in Saint John’s, measured in degrees Celsius, over the past years.
Total Precipitation in September in Saint John’s Over the Years
This chart shows the average precipitation in September in Saint John’s, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Saint John’s
Click on a specific day in September for detailed info on the typical weather on that day in Saint John’s. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Saint John’s
Have you been to Saint John’s in September?
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Average Weather in Saint John’s by Month
Click on a month below to see detailed weather info for Saint John’s. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Saint John’s for all months at once
