São Tomé
São Tomé and Príncipe
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
São Tomé, São Tomé and Príncipe

Clear blue water crashing on the big shore rocks on the beach in São Tomé, São Tomé and Principe, with palm trees along the beautiful beach
Clear blue water crashing on the big shore rocks on the beach in São Tomé, São Tomé and Principe, with palm trees along the beautiful beach
January, the same as December, is a moderately hot winter month in São Tomé, São Tomé and Príncipe, with average temperature ranging between min 22.4°C (72.3°F) and max 29.4°C (84.9°F).

Temperature

In January, the average high-temperature is relatively the same as in December - a still moderately hot 29.4°C (84.9°F). The average low-temperature, in São Tomé, is 22.4°C (72.3°F).

Humidity

January, November and December, with an average relative humidity of 85%, are most humid months.

Rainfall

In São Tomé, during 8 rainfall days, 81mm (3.2") of precipitation is typically accumulated. In São Tomé, during the entire year, the rain falls for 94 days and collects up to 885mm (34.8") of precipitation.

Sea temperature

In São Tomé, the average water temperature is 28°C (82.4°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

January through December, with an average of 12.1h of daylight, are months with the longest days. January through December, with an average of 12.1h of daylight, are months with the shortest days.

Sunshine

The average sunshine is 4.6h.

UV index

January through May, August through December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index reading of 11, and higher, represents an excessive health risk from unprotected exposure to the Sun's UV rays for the average person.
In January, the average maximum UV index of 12 translate into the following recommendations:
Take all necessary precautions, as unprotected skin can burn in minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in January in São Tomé?

In January, in São Tomé, São Tomé and Príncipe, the average high-temperature is 29.4°C (84.9°F), and the average low-temperature is 22.4°C (72.3°F).

What are the most humid months in São Tomé?

Months with the highest humidity in São Tomé are January, November and December, with an average relative humidity of 85%.

What is the average humidity in January in São Tomé?

In January, the average relative humidity in São Tomé, São Tomé and Príncipe, is 85%.

How much does it rain in São Tomé in January?

In São Tomé, São Tomé and Príncipe, in January, during 8 rainfall days, 81mm (3.2") of precipitation is typically accumulated.

What is the water temperature in January in São Tomé?

In São Tomé, São Tomé and Príncipe, in January, the average water temperature is 28°C (82.4°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

When are the longest days in São Tomé?

Months with the longest days in São Tomé, São Tomé and Príncipe, are January through December, with an average of 12.1h of daylight.

What is the month with the shortest days in São Tomé?

January through December, with an average of 12.1h of daylight, are months with the shortest days in São Tomé.

How many hours of daylight does São Tomé have in January?

In January, the average length of the day in São Tomé, São Tomé and Príncipe, is 12.1h.

How many hours of sunshine does São Tomé have in January?

In January, the average sunshine in São Tomé is 4.6h.

What is the month with the highest UV index in São Tomé?

Months with the highest UV index are January through May, August through December, with an average maximum UV index of 12.

What is the UV index reading in January in São Tomé?

The average daily maximum UV index in January in São Tomé, São Tomé and Príncipe, is 12. A UV Index of 11, and more, symbolizes an ultimate hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in January - São Tomé, São Tomé and Príncipe
  • Average high temperature in January: 29.4°C

The warmest month (with the highest average high temperature) is March (30.2°C).
The month with the lowest average high temperature is July (27.3°C).

  • Average low temperature in January: 22.4°C

Months with the highest average low temperature are March, April and May (22.6°C).
The coldest month (with the lowest average low temperature) is July (20.4°C).

Average humidity in January - São Tomé, São Tomé and Príncipe
  • Average humidity in January: 85%

Months with the highest relative humidity are January, November and December (85%).
The month with the lowest relative humidity is July (77%).

Average rainfall in January - São Tomé, São Tomé and Príncipe
  • Average rainfall in January: 81mm

The wettest month (with the highest rainfall) is March (131mm).
The driest month (with the lowest rainfall) is July (0mm).

Average rainfall days in January - São Tomé, São Tomé and Príncipe
  • Average rainfall days in January: 8 days

Months with the highest number of rainy days are March and October (12 days).
The month with the lowest number of rainy days is July (2 days).

Average sea temperature in January - São Tomé, São Tomé and Príncipe
  • Average sea temperature in January: 28°C

Best months for swimming (with the highest average sea temperature) are February, March and April (29°C).
The coldest month (with the lowest average sea temperature) is July (25°C).

Average daylight in January / Average sunshine in January - São Tomé, São Tomé and Príncipe
  • Average daylight in January: 12.1h

Months with the longest days are January, February, March, April, May, June, July, August, September, October, November and December (Average daylight: 12.1h).
Months with shortest days are January, February, March, April, May, June, July, August, September, October, November and December (Average daylight: 12.1h).

  • Average sunshine in January: 4.6h

The month with most sunshine is June (Average sunshine: 5.5h).
The month with least sunshine is October (Average sunshine: 3.7h).

Average UV index in January - São Tomé, São Tomé and Príncipe
  • Average UV index in January: 12

Months with the highest UV index are January, February, March, April, May, August, September, October, November and December (UV index 12).
The month with the lowest UV index is July (UV index 10).