The weather in August in Saint Helena, Ascension and Tristan da Cunha
It's cool to moderate in August in Saint Helena, Ascension and Tristan da Cunha with an average temperature of 18°C. Temperatures this month range from a low of 18°C to a high of 19°C. At night, you can expect temperatures between 15°C and 16°C.
Looking for great weather? August is a good time to be in Saint Helena, Ascension and Tristan da Cunha. The temperatures are nice, and there’s not too much 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 Helena, Ascension and Tristan da Cunha. 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 23°C in 2022, Saint Helena, Ascension and Tristan da Cunha reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 15°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of 11°C to a highest value of 17°C.
Rainfall amount
In August, there is an average of 39 mm of precipitation, spread over 8 days. The wind speed is around 5 Bft, mostly coming from the Southeast.
Daily weather in August for Saint Helena, Ascension and Tristan da Cunha
Click on any day in August to get detailed info about the usual weather on that day in Saint Helena, Ascension and Tristan da Cunha. Check out the historical temperatures and precipitation over the past 10 years on this day.
August weather comparison
| Saint Helena, Ascension and Tristan da Cunha | New York | |
|---|---|---|
| Average temperature | 18°C | 30°C |
| Max. temperature | 19°C | 31°C |
| Min. temperature | 15°C | -5°C |
| Total precipitation | 39 mm | 79 mm |
| Rainy days | 8 days | 13 days |
Start of August
The month of August starts in Saint Helena, Ascension and Tristan da Cunha with mild temps, averaging around 19°C during the day and nights around 16°C.
Mid August
By mid-August, daytime temps stay steady at around 19°C, with nights around 16°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 Helena, Ascension and Tristan da Cunha is around 19°C, while nighttime temps are about 15°C. A shower might pop up, but overall, the weather will be dry and sunny.
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
You can check out all destinations in Saint Helena, Ascension and Tristan da Cunha to get the full picture of the climate.
Temperature charts
These charts show the average temperatures in August in Saint Helena, Ascension and Tristan da Cunha. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in August in Saint Helena, Ascension and Tristan da Cunha
Temperature in August in Saint Helena, Ascension and Tristan da Cunha over the years
Precipitation charts
These charts show the average amount of precipitation in August in Saint Helena, Ascension and Tristan da Cunha. 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 Helena, Ascension and Tristan da Cunha
Total precipitation in August in Saint Helena, Ascension and Tristan da Cunha over the years
Daily UV index in August in Saint Helena, Ascension and Tristan da Cunha
This chart shows the average daily UV index in August in Saint Helena, Ascension and Tristan da Cunha, 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 Helena, Ascension and Tristan da Cunha
Have you been to Saint Helena, Ascension and Tristan da Cunha in August?
Share your weather experience in August in Saint Helena, Ascension and Tristan da Cunha.
Average weather in Saint Helena, Ascension and Tristan da Cunha by month
Click on a month below to see detailed weather info for Saint Helena, Ascension and Tristan da Cunha. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.