Weather in August
August stands unchallenged as the rainiest month in Tristan da Cunha with rainfall stretching up to 175mm (6.89"). Concurrently, the UV index bottom marks at two units in this month, standing in contrast to the high precipitation numbers. Sunshine hours and daylight hours both experience noticeable boosts, however this does not translate into warmer temperatures as both sea and atmospheric temperatures remain relatively low. The weather breeds a chillier atmosphere, paving the way for the subsequent transition to September.
Note: While a brief time in 13°C (55.4°F) at 13°C (55.4°F) is already bracing, plunging below 10°C (50°F) can severely affect breathing and introduce a cold shock, relying on your physical state.
On the first day of the month, sunrise is at 07:47 and sunset at 18:03. On the last day of August, in Tristan da Cunha, sunrise is at 07:10 and sunset at 18:28 GMT.
Note: The daily high UV index of 3 during August translates into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Temperature
Tristan da Cunha's lowest temperatures tend to occur in July through September, with an average high-temperature of 14°C (57.2°F).Rainfall
August is the month with the most rainfall in Tristan da Cunha. Rain falls for 26 days and accumulates 175mm (6.89") of precipitation.Sea temperature
The months with the coldest seawater in Tristan da Cunha are August and September, with an average sea temperature of 13°C (55.4°F).Note: While a brief time in 13°C (55.4°F) at 13°C (55.4°F) is already bracing, plunging below 10°C (50°F) can severely affect breathing and introduce a cold shock, relying on your physical state.
Daylight
The average length of the day in August in Tristan da Cunha is 10h and 45min.On the first day of the month, sunrise is at 07:47 and sunset at 18:03. On the last day of August, in Tristan da Cunha, sunrise is at 07:10 and sunset at 18:28 GMT.
Sunshine
In August, the average sunshine is 3.4h.UV index
In Tristan da Cunha, the average daily maximum UV index in August is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 3 during August translates into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Tristan da Cunha?
The months of July through September bring the lowest temperatures in Tristan da Cunha, averaging a high of 14°C (57.2°F).
What is the average August temperature in Tristan da Cunha?
An average high-temperature, in August, in Tristan da Cunha, is 14°C (57.2°F) and the average low-temperature is 10°C (50°F).
What is the wettest month in Tristan da Cunha?
August is the month with the most rainfall in Tristan da Cunha. Rain falls for 26 days and accumulates 175mm (6.89") of precipitation.
How much does it rain in Tristan da Cunha in August?
In Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, during August, the rain falls for 26 days and regularly aggregates up to 175mm (6.89") of precipitation.
When is the sea coldest in Tristan da Cunha?
August and September, with an average sea temperature of 13°C (55.4°F), are months with the coldest seawater in Tristan da Cunha.
What is the water temperature in August in Tristan da Cunha?
In Tristan da Cunha, the average seawater temperature in August is 13°C (55.4°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.
What is the average length of the day in August in Tristan da Cunha?
The average day length in August in Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, is 10h and 45min.
When is the sunrise / sunset in August in Tristan da Cunha?
On the first day of August in Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, sunrise is at 07:47 and sunset at 18:03. On the last day of the month, sunrise is at 07:10 and sunset at 18:28 GMT.
How many hours of sunshine does Tristan da Cunha have in August?
The average sunshine duration in August in Tristan da Cunha is 3.4h.
What is the UV index reading in August in Tristan da Cunha?
The average daily maximum UV index in August is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average temperature in August
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average high temperature in August: 14°C
The warmest month (with the highest average high temperature) is February (21°C).
The months with the lowest average high temperature are July, August and September (14°C).
- Average low temperature in August: 10°C
The month with the highest average low temperature is February (17°C).
The coldest months (with the lowest average low temperature) are August and September (10°C).
Average rainfall in August
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average rainfall in August: 175mm
The wettest month (with the highest rainfall) is August (175mm).
The driest month (with the least rainfall) is January (93mm).
Average rainfall days in August
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average rainfall days in August: 26 days
The month with the highest number of rainy days is August (26 days).
The month with the least rainy days is February (16 days).
Average sea temperature in August
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average sea temperature in August: 13°C
The best months for swimming (with the highest average sea temperature) are February and March (18°C).
The coldest months (with the lowest average sea temperature) are August and September (13°C).
Average daylight in August /
Average sunshine in August
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average daylight in August: 10h and 4min
The month with the longest days is December (Average daylight: 14h and 42min).
The month with the shortest days is June (Average daylight: 9h and 42min).
- Average sunshine in August: 3h and 2min
The month with the most sunshine is February (Average sunshine: 5h and 6min).
The month with the least sunshine is June (Average sunshine: 3h and 18min).
Average UV index in August
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average UV index in August: 3
The month with the highest UV index is January (UV index 12).
The months with the lowest UV index are June and July (UV index 2).
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location