Weather in January
Presenting as the initial month of the year, January's weather in Tristan da Cunha sets the tone for rest of the tropical year. The island experiences light rainfall interspersed with sunny intervals. While sunshine duration is relatively low, the UV index stands highest in the year at 12 units. Notably, rainfall touches a manageable 93mm (3.66") and daylight spans to about 14.4 hours. Overall, the climate during this time is welcoming for tourists, offering a comfortable temperature range accompanied by a modest UV index.
Note: Swimming in water with a temperature of 17°C (62.6°F) is not a pleasurable experience for the majority. As the temperature falls below 21°C (69.8°F), it becomes increasingly hard to control one's breathing.
On the first day of the month, sunrise is at 05:32 and sunset at 20:12. On the last day of January, sunrise is at 06:02 and sunset at 20:02 GMT.
Note: In January, an average UV index of 12 transforms into the following instructions:
Adopt all important safety measures, unprotected skin may burn rapidly. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Temperature
Tristan da Cunha sees the arrival of January with an average high-temperature of a pleasant 20°C (68°F), indicating a subtle variation from December. During January, Tristan da Cunha's nighttime temperatures demonstrate a subtle cooling from daytime highs, stabilizing at an enjoyable 16°C (60.8°F).Rainfall
The month with the least rainfall in Tristan da Cunha is January, when the rain falls for 18 days and typically collects 93mm (3.66") of precipitation.Sea temperature
In January, the average sea temperature is 17°C (62.6°F).Note: Swimming in water with a temperature of 17°C (62.6°F) is not a pleasurable experience for the majority. As the temperature falls below 21°C (69.8°F), it becomes increasingly hard to control one's breathing.
Daylight
The average length of the day in January is 14h and 22min.On the first day of the month, sunrise is at 05:32 and sunset at 20:12. On the last day of January, sunrise is at 06:02 and sunset at 20:02 GMT.
Sunshine
In January, the average sunshine is 4.5h.UV index
With an average maximum UV index of 12, January is the month with the highest UV index in Tristan da Cunha. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In January, an average UV index of 12 transforms into the following instructions:
Adopt all important safety measures, unprotected skin may burn rapidly. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality 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 is the temperature in January in Tristan da Cunha?
The average high-temperature, in January, in Tristan da Cunha, is 20°C (68°F), while the average low-temperature is 16°C (60.8°F).
What is the driest month in Tristan da Cunha?
The month with the least rainfall is January, when the rain falls for 18 days and typically collects 93mm (3.66") of precipitation.
How much does it rain in Tristan da Cunha in January?
In Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, in January, during 18 rainfall days, 93mm (3.66") of precipitation is typically accumulated.
How cold is the water in January in Tristan da Cunha?
In January, the average sea temperature in Tristan da Cunha is 17°C (62.6°F). For swimming, a surface water temperature of 17°C (62.6°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
What is the average length of the day in January in Tristan da Cunha?
In January, the average day length is 14h and 22min.
When is the sunrise / sunset in January in Tristan da Cunha?
In January, on the first day of the month, sunrise is at 05:32 and sunset at 20:12. On the last day of the month, in Tristan da Cunha, sunrise is at 06:02 and sunset at 20:02 GMT.
How long on average sun shines in January in Tristan da Cunha?
The average sunshine duration in January in Tristan da Cunha is 4.5h.
When is the highest UV index in Tristan da Cunha?
January is the month with the highest UV index in Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, with an average maximum UV index of 12.
How high is the UV index in January in Tristan da Cunha?
In Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, the average daily maximum UV index in January is 12. A UV Index estimate of 11, and higher, represents an extreme health vulnerability from exposure to the Sun's UV radiation.
Average temperature in January
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average high temperature in January: 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 January: 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 January
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average rainfall in January: 93mm
The wettest month (with the highest rainfall) is August (175mm).
The driest month (with the least rainfall) is January (93mm).
Average rainfall days in January
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average rainfall days in January: 18 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 January
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average sea temperature in January: 17°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 January /
Average sunshine in January
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average daylight in January: 14h 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 January: 4h and 3min
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 January
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average UV index in January: 12
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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