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

April 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
April, like March, is a hot spring month in São Tomé, São Tomé and Príncipe, with temperature in the range of an average low of 22.6°C (72.7°F) and an average high of 30.1°C (86.2°F).

Temperature

In April, the average high-temperature is relatively the same as in March - a still hot 30.1°C (86.2°F). In April, the average low-temperature is 22.6°C (72.7°F).

Humidity

The average relative humidity in April is 83%.

Rainfall

In São Tomé, it is raining for 11 days, with typically 122mm (4.8") of accumulated precipitation. Throughout the year, in São Tomé, there are 94 rainfall days, and 885mm (34.8") of precipitation is accumulated.

Sea temperature

February through April, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater. Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

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 in São Tomé is 4.2h.

UV index

Months with the highest UV index are January through May, August through December, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an extreme threat to health from unprotected exposure to the Sun's UV rays for the ordinary person.
The daily maximum UV index of 12 in April interpret into the following advice:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in April in São Tomé?

In April, in São Tomé, São Tomé and Príncipe, the average high-temperature is 30.1°C (86.2°F), and the average low-temperature is 22.6°C (72.7°F).

What is the average humidity in April in São Tomé?

In São Tomé, the average relative humidity in April is 83%.

How much does it rain in São Tomé in April?

In São Tomé, during April, the rain falls for 11 days and regularly aggregates up to 122mm (4.8") of precipitation.

What months are the sea warmest in São Tomé?

February through April, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in São Tomé. For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How warm is the water in April in São Tomé?

In April, the average sea temperature is 29°C (84.2°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

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?

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

What is the average length of the day in April in São Tomé?

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

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

The average sunshine in April in São Tomé, São Tomé and Príncipe, is 4.2h.

When is the highest UV index in São Tomé?

January through May, August through December, with an average maximum UV index of 12, are months with the highest UV index in São Tomé, São Tomé and Príncipe.

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

The average daily maximum UV index in April in São Tomé is 12. A UV Index of 11, and more, symbolizes an extreme health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in April - São Tomé, São Tomé and Príncipe
  • Average high temperature in April: 30.1°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 April: 22.6°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 April - São Tomé, São Tomé and Príncipe
  • Average humidity in April: 83%

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 April - São Tomé, São Tomé and Príncipe
  • Average rainfall in April: 122mm

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

Average rainfall days in April - São Tomé, São Tomé and Príncipe
  • Average rainfall days in April: 11 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 April - São Tomé, São Tomé and Príncipe
  • Average sea temperature in April: 29°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 April / Average sunshine in April - São Tomé, São Tomé and Príncipe
  • Average daylight in April: 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 April: 4.2h

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 April - São Tomé, São Tomé and Príncipe
  • Average UV index in April: 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).