São Tomé and Príncipe in september: average Weather, Temperature and Climate, Where to go?
Weather in Sao Tome and Principe in september 2025
In this section, you have access to the weather forecast for september for most popular cities in São Tomé and Príncipe. These forecasts are probabilities for the month of september from weather reports for over 10 years. The percentage indicates the probability of having the weather mentioned.
Average weather in september in São Tomé
tolerable weather UV index: 7
Weather at 6am
77°F
Moderate rain at times
38% of time
30%
26%
7%
Weather at 12pm
77°F
Moderate rain at times
37% of time
36%
20%
7%
Weather at 6pm
81°F
Partly Cloudy
40% of time
32%
20%
5%
Weather at 3am
81°F
40%
29%
28%
4%
Where to go in Sao Tome and Principe in september?
Where to go in Sao Tome and Principe in september: destination map
perfect weather
good
tolerable
bad
very bad
Where should you go in Sao Tome and Principe in september when it comes to the weather?
Remember:
The climate in Sao Tome and Principe in september is tolerable across the board.
Good news: Although it is not perfect the weather in São Tomé and Príncipe that month should be good in São Tomé. I allows to savor vacation in this city. And even why not take a little time to sunbathe!
If you do not go to spend your time in a lounger by the pool, but, for example to go sightseeing around, the cities of Trindade, Santana, Santo António, Monte Mario, Neves, Santa Catarina, Santo Amaro and São João dos Angolares have a ok but correct weather for this kind of activity in september.
Climate in Sao Tome and Principe in september
Climate in São Tomé in september
In september, maximum temperature is 81°F and minimum temperature is 77°F (for an average temperature of 79°F). The climate quite enjoyable there in september. With about 3.1in over 5 days, the rain will not be a problem throughout your trip.
With a good climate, the month of september is an advisable month to go in São Tomé.
| September | |||
| Average temperature | 79°F | ||
| Highest temperature | 81°F | ||
| Lowest temperature | 77°F | ||
| Rainfall | 3.1in | ||
| Number of days with rainfall | 5 day(s) (16%) | ||
| Humidity | 84% | ||
| Daily sunshine hours | 9 | ||
| Cloud cover | 60% | ||
| Length of day | 12:07 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Santa Catarina in september
In the month of september, maximum temperature is 81°F and minimum temperature is 77°F (for an average temperature of 79°F). The climate nice in that locality in this month. With about 3.1in over 5 days, rainfall is infrequent for your stay.
With a correct climate, september is okay (but not the best time) for traveling there.
| September | |||
| Average temperature | 79°F | ||
| Highest temperature | 81°F | ||
| Lowest temperature | 77°F | ||
| Rainfall | 3.1in | ||
| Number of days with rainfall | 5 day(s) (16%) | ||
| Humidity | 84% | ||
| Daily sunshine hours | 9 | ||
| Cloud cover | 60% | ||
| Length of day | 12:07 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Monte Mario in september
In the month of september, maximum temperature is 81°F and minimum temperature is 77°F (for an average temperature of 79°F). The climate pleasant here in september. With about 3.1in over 5 days,
it rains very little throughout your stay.
With a correct weather, september is okay (but not good month) for traveling in that area in São Tomé and Príncipe.
| September | |||
| Average temperature | 79°F | ||
| Highest temperature | 81°F | ||
| Lowest temperature | 77°F | ||
| Rainfall | 3.1in | ||
| Number of days with rainfall | 5 day(s) (16%) | ||
| Humidity | 84% | ||
| Daily sunshine hours | 9 | ||
| Cloud cover | 60% | ||
| Length of day | 12:06 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Neves in september
In september, the mean temperature in Neves is 79°F (maximum temperature is 81°F and minimum temperature is 77°F). The climate nice there in this month. With about 3.1in over 5 days, the rain will not be a problem for your holidays.
With a correct weather, september is okay (but not good month) for traveling in this locality.
| September | |||
| Average temperature | 79°F | ||
| Highest temperature | 81°F | ||
| Lowest temperature | 77°F | ||
| Rainfall | 3.1in | ||
| Number of days with rainfall | 5 day(s) (16%) | ||
| Humidity | 84% | ||
| Daily sunshine hours | 9 | ||
| Cloud cover | 60% | ||
| Length of day | 12:07 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Santana in september
In the month of september, maximum temperature is 81°F and minimum temperature is 77°F (for an average temperature of 79°F). The climate nice in this city in this month. With about 3.1in over 5 days, rain may be scarce for your holidays.
With proper weather, september is okay (but not good time) for traveling in Santana.
| September | |||
| Average temperature | 79°F | ||
| Highest temperature | 81°F | ||
| Lowest temperature | 77°F | ||
| Rainfall | 3.1in | ||
| Number of days with rainfall | 5 day(s) (16%) | ||
| Humidity | 84% | ||
| Daily sunshine hours | 9 | ||
| Cloud cover | 60% | ||
| Length of day | 12:07 | ||
| Our opinion at whereandwhen.net | tolerable |
All cities in Sao Tome and Principe in september
| São Tomé in september | tolerable weather |
| Santa Catarina in september | tolerable weather |
| Monte Mario in september | tolerable weather |
| Neves in september | tolerable weather |
| Santana in september | tolerable weather |
| Santo Amaro in september | tolerable weather |
| Santo António in september | tolerable weather |
| São João dos Angolares in september | tolerable weather |
| Trindade in september | tolerable weather |
Weather data for São Tomé and Príncipe in september:
Weather data for São Tomé and Príncipe in september is derived from an average of the weather forecast since 2009 in Sao Tome and Principe. There is a margin of error and these forecasts are to be considered as general information only. The weather in Sao Tome and Principe can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Sao Tome and Principe.