July 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
Clear blue water crashing on the big shore rocks on the beach in São Tomé, São Tomé and Principe
July, the same as June, is another warm summer month in São Tomé, São Tomé and Príncipe, with average temperature varying between 20.4°C (68.7°F) and 27.3°C (81.1°F).
The perfect water temperature of 25°C (77°F) and only 2 rainfall days makes July a great period for swimming and other water activities.

Temperature

With an average high-temperature of 27.3°C (81.1°F) and an average low-temperature of 20.4°C (68.7°F), July is the coldest month.

Heat index

In July, the average heat index is evaluated at a tropical 30.1°C (86.2°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like differences in body mass, height, and shape, metabolic differences, wind, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

With an average relative humidity of 77%, July is the least humid month in São Tomé.

Rainfall

July is the only month when rain does not fall in São Tomé.

Sea temperature

The month with the coldest seawater is July, with an average sea temperature of 25°C (77°F).
Note: 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 in São Tomé. January through December, with an average of 12.1h of daylight, are months with the shortest days in São Tomé, São Tomé and Príncipe.

Sunshine

In July, the average sunshine in São Tomé is 5.2h.

UV index

The month with the lowest UV index is July, with an average maximum UV index of 10. A UV Index value of 8 to 10 symbolizes a very high health risk from unprotected exposure to the Sun's UV rays for average individuals.
Note: In July, the average maximum UV index of 10 translate into the following recommendations:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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. 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 reflection of water and sand dramatically increases exposure to the UV rays.

What is the coldest month in São Tomé?

With an average high-temperature of 27.3°C (81.1°F) and an average low-temperature of 20.4°C (68.7°F), July is the coldest month.

What is the temperature in July in São Tomé?

In São Tomé, São Tomé and Príncipe, in July, the average high-temperature is 27.3°C (81.1°F), and the average low-temperature is 20.4°C (68.7°F). In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), that combines air temperature and relative humidity, is appraised at 30.1°C (86.2°F).

What is the least humid month in São Tomé?

The least humid month in São Tomé is July, with an average relative humidity of 77%.

What is the average humidity in July in São Tomé?

In July, the average relative humidity is 77%.

Does it rain in São Tomé in July?

In July, it doesn't rain. June is the latest month when it rains.

What is the driest month in São Tomé?

The only month without rainfall in São Tomé is July.

When is the sea coldest in São Tomé?

July is the month with the coldest seawater, with an average sea temperature of 25°C (77°F).

What is the sea water temperature in July in São Tomé?

In São Tomé, São Tomé and Príncipe, in July, the average water temperature is 25°C (77°F). 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.

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 July?

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

How long on average sun shines in July in São Tomé?

The average sunshine in July in São Tomé is 5.2h.

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

The month with the lowest UV index in São Tomé, São Tomé and Príncipe, is July, with an average maximum UV index of 10.

How high is the UV index in July in São Tomé?

In July, the average daily maximum UV index in São Tomé is 10. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in July - São Tomé, São Tomé and Príncipe
  • Average high temperature in July: 27.3°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 July: 20.4°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 July - São Tomé, São Tomé and Príncipe
  • Average humidity in July: 77%

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 July - São Tomé, São Tomé and Príncipe
  • Average rainfall in July: 0mm

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

Average rainfall days in July - São Tomé, São Tomé and Príncipe
  • Average rainfall days in July: 2 days

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

Average sea temperature in July - São Tomé, São Tomé and Príncipe
  • Average sea temperature in July: 25°C

The 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 July / Average sunshine in July - São Tomé, São Tomé and Príncipe
  • Average daylight in July: 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 the shortest days are January, February, March, April, May, June, July, August, September, October, November and December (Average daylight: 12.1h).

  • Average sunshine in July: 5.2h

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

Average UV index in July - São Tomé, São Tomé and Príncipe
  • Average UV index in July: 10

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).