If you plan to visit St. John's in August, the weather is typically alright, with an average high temperature of +66°F during the day and approximately 1 sunny days. Expect some rainy, though, as there are typically 16 rainy days in the month and around 86 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flightsin one click on Avionero.
Good to know:
August is usually the hottest month of the year in St. John's;
Average weather
☀️
+66°F
Avg. max. temperature
+43°F
Min.
+86°F
Max.
86 mm
Total precipitation
83%
Avg. humidity
4 m/s
Avg. wind
1 ☀️
Sunny Days
14 ⛅️
Cloudy
16 🌦
Rainy
Our opinion: St. John's has OK weather in August.
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Average temperature in St. John's in August
Here are the expected maximum, average and minimum temperatures in St. John's for August based on the historical data.
Last Year
Historical Data
Going from a maximum of +77°F during the day to a minimum of +52°F during the night, the temperature in August averages around +68°F.
The average maximum temperature goes up 21% by the end of the month, compared with the beginning of the month, from +68°F to +73°F.
Is St. John's warm or cold in August?
St. John's is typically mild in August.
Maximum temperatures go up compared to the previous month from +64°F to +66°F. The minimum temperature also goes up from +54°F to +57°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
August is the hottest month in St. John's, here is the comparison with other months:
Climate in St. John's in August
St. John's weather looks like this, on average, in August and the surrounding months.
July
August
September
Avg. temperature
+64°F
+66°F
+61°F
Min. temperature
+41°F
+43°F
+36°F
Max. temperature
+88°F
+86°F
+81°F
Rainfall
77 mm
86 mm
100 mm
Wind
4 m/s
4 m/s
5 m/s
Humidity
84%
83%
83%
Air pressure
1014 HPa
1014 HPa
1015 HPa
Sunny days
1
1
2
Cloudy days
14
14
12
Rainy days
15
16
16
Snowy days
0
0
0
August weather is still as ok as in July.It’s getting warmer as August arrives. The average maximum temperature goes up from +64°F to +66°F during the day.Prepare for more rain. Average rainfall goes from 77 mm to 86 mm.It feels drier, as humidity decreases from 84% to 83%.The average wind speed doesn’t change much during August, staying around 4 m/s.The amount of sunny days stay about the same, averaging 1 sunny days during the month.
September brings much the same weather, it remains ok.
Wind speed in St. John's in August based on historical data.
Last Year
Historical Data
The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in St. John's is gradually increasing during August, going from 3 m/s to 8 m/s over the course of the month.
Rain
Amount of rainfall in mm during August in St. John's based on historical data.
Last Year
Historical Data
Typically, there is a 61% chance of rain on an average day in August, with total rainfall of approximately 141 mm. The maximum amount of rainfall per day is around 27 mm, which is moderate rain.August is a pretty wet month with over 19 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how August is compared with other months in the amount of precipitation, total mm:
St. John's wettest month is April, where a typical day has a 20% chance of precipitation and 126 mm of rainfall per day. February, on the other hand, is the driest month with a mere 7% chance of precipitation and 37 mm of rainfall per day.
How was the weather last August in St. John's?
This is the weather in St. John's in August 2024:
1 August
☁️
+69°F
2 August
☁️
+69°F
3 August
☁️
+76°F
4 August
☀️
+69°F
5 August
☁️
+66°F
6 August
🌫️
+61°F
7 August
🌫️
+60°F
8 August
☁️
+61°F
9 August
☁️
+60°F
10 August
🌫️
+70°F
11 August
☁️
+70°F
12 August
☁️
+73°F
13 August
☁️
+74°F
14 August
☁️
+68°F
15 August
🌫️
+64°F
16 August
☁️
+68°F
17 August
🌧️
+64°F
18 August
☁️
+72°F
19 August
☁️
+63°F
20 August
🌫️
+73°F
21 August
☁️
+73°F
22 August
🌧️
+66°F
23 August
🌧️
+63°F
24 August
🌫️
+62°F
25 August
☁️
+65°F
26 August
☁️
+67°F
27 August
☁️
+67°F
28 August
🌫️
+74°F
29 August
☁️
+74°F
30 August
☁️
+73°F
31 August
🌧️
+73°F
In August 2024 St. John's had 1 sunny days, 19 cloudy days, and 3 rainy days. The average maximum temperature was +68°F, with an absolute maximum of +77°F and a minimum of +61°F. The average humidity was 88%, with a maximum of 98% and a minimum of 43%. The average wind speed was 4 m/s, with a maximum of 13 m/s and a minimum of 0 m/s.
Are you planning a trip in August?
Climate Change Over the Years
This is how St. John's climate has changed over the last 43 years.
The climate in St. John's in August has not changed that much over the last 43 years.
The average temperature was the lowest in 1985 (+44°F) and the highest in 2022 (+52°F). The driest year was 1989 with only 563 mm of rainfall, and the wettest year was 2023 with 7230 mm.
FAQ
Frequently asked questions about the weather in St. John's in August:
Is August a good time to visit St. John's?
It’s always a good time to visit St. John's, but the weather is changeable in August, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in St. John's in August?
August has mild temperatures in St. John's. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Is St. John's rainy in August?
St. John's is often rainy in August. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in St. John's in August?
Usually, it’s not very sunny in St. John's in August, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in St. John's, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
