Weathermondo.com
GrenadaThe weather in August in Saint John
It's hot in August in Saint John with an average temperature of 31°C. Temperatures this month range from a low of 31°C to a high of 32°C. At night, you can expect temperatures between 26°C and 27°C.
Looking for sun? August isn’t a good month to be in Saint John. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in August for Saint John, Grenada. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 34°C in 2022, Saint John reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 27°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 23°C to a highest value of 29°C.
Rainfall amount
In August, there is an average of 188 mm of precipitation, spread over 17 days. The wind speed is around 5 Bft, mostly coming from the East.
Daily weather in August for Saint John
Click on any day in August to get detailed info about the usual weather on that day in Saint John. Check out the historical temperatures and precipitation over the past 10 years on this day.
August weather comparison
| Saint John | New York | |
|---|---|---|
| Average temperature | 31°C | 30°C |
| Max. temperature | 32°C | 31°C |
| Min. temperature | 26°C | -5°C |
| Total precipitation | 188 mm | 79 mm |
| Rainy days | 17 days | 13 days |
Start of August
The month of August starts in Saint John with hot temps, averaging around 31°C during the day and nights around 27°C.
Mid August
By mid-August, daytime temps rise to around 32°C, with nights around 27°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of August
By the end of August, the average daytime temperature in Saint John is around 32°C, while nighttime temps are about 27°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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.
Check out the climate of Saint John for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in August in Saint John, Grenada. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in August in Saint John
Temperature in August in Saint John over the years
Precipitation charts
These charts show the average amount of precipitation in August in Saint John, Grenada. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in August in Saint John
Total precipitation in August in Saint John over the years
Daily UV index in August in Saint John
This chart shows the average daily UV index in August in Saint John, 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.
Weather experiences in August in Saint John
Have you been to Saint John in August?
Share your weather experience in August in Saint John.
Average weather in Saint John by month
Click on a month below to see detailed weather info for Saint John. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.