March weather forecast
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha

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Weather in March

March might witness a minor spike in temperature but the overall climatic pattern remains almost identical to February. Rainfall continues to climb, touching 121mm (4.76"), and there's a narrow drop in the duration of daylight hours. Coastal stays become even more pleasurable due to a consistent sea temperature. March encapsulates in itself the essence of the transition between summer and autumn, offering guests an amicable mix of weather conditions.

Temperature

The advent of March in Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, brings an average high-temperature of a still agreeable 20°C (68°F), exhibiting minor difference from the previous month. Nights during March maintain a steady temperature, averaging at a refreshing 16°C (60.8°F).

Rainfall

In March, the rain falls for 17 days. Throughout March, 121mm (4.76") of precipitation is accumulated. In Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, during the entire year, the rain falls for 251 days and collects up to 1681mm (66.18") of precipitation.

Sea temperature

The months with the warmest seawater in Tristan da Cunha are February and March, with an average sea temperature of 18°C (64.4°F).
Note: Swimming in water of 18°C (64.4°F) is not enjoyable for the majority of individuals. Breathing control becomes increasingly challenging as the temperature dips from 21°C (69.8°F) to 15°C (59°F).

Daylight

In Tristan da Cunha, the average length of the day in March is 12h and 19min.
On the first day of the month, sunrise is at 06:34 and sunset at 19:27. On the last day of March, in Tristan da Cunha, sunrise is at 07:02 and sunset at 18:43 GMT.

Sunshine

In Tristan da Cunha, the average sunshine in March is 4.7h.

UV index

In March, the average daily maximum UV index is 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 8 in March translates into this advice:
Don't neglect protection; skin and eyes can be burned swiftly if left exposed. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.

Frequently asked questions

What is the average March temperature in Tristan da Cunha?

March temperatures in Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, vary between a high-temperature of 20°C (68°F) and a low-temperature of 16°C (60.8°F).

How many days does it rain in March in Tristan da Cunha?

In Tristan da Cunha, in March, during 17 rainfall days, 121mm (4.76") of precipitation is typically accumulated.

What months are the sea warmest in Tristan da Cunha?

The months with the warmest seawater in Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, are February and March, with an average sea temperature of 18°C (64.4°F).

What is the sea temperature in March in Tristan da Cunha?

In Tristan da Cunha, the average seawater temperature in March is 18°C (64.4°F). For most, swimming in 18°C (64.4°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

How many hours of daylight does Tristan da Cunha have in March?

In Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, the average day length in March is 12h and 19min.

When are sunrise and sunset in March in Tristan da Cunha?

On the first day of March, sunrise is at 06:34 and sunset at 19:27. On the last day of the month, sunrise is at 07:02 and sunset at 18:43 GMT.

How long on average sun shines in March in Tristan da Cunha?

In Tristan da Cunha, the average sunshine duration in March is 4.7h.

What is the UV index reading in March in Tristan da Cunha?

In March, the average daily maximum UV index is 8. A UV Index reading of 8 to 10 represents a very high health vulnerability from unprotected exposure to UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in March
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha

Average temperature in March - Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
  • Average high temperature in March: 20°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 March: 16°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 March
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha

Average rainfall in March - Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
  • Average rainfall in March: 121mm

The wettest month (with the highest rainfall) is August (175mm).
The driest month (with the least rainfall) is January (93mm).

Average rainfall days in March
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha

Average rainfall days in March - Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
  • Average rainfall days in March: 17 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 March
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha

Average sea temperature in March - Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
  • Average sea temperature in March: 18°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 March /
Average sunshine in March
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha

Average daylight in March / Average sunshine in March - Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
  • Average daylight in March: 12h and 2min

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 March: 4h and 4min

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 March
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha

Average UV index in March - Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
  • Average UV index in March: 8

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

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