Saint Johns Weather in August

The climate in Saint Johns during August can be summarized as warm and reasonably dry.

August is in the summer in Saint Johns and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a comfortable 30°C (86°F), whilst at night 14°C (56°F) is normal.

On average August is the wettest month of the year in Saint Johns with around 53mm 2.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 11.1 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Saint Johns in August 2025.