Monrovia weather in September
In September, Monrovia has an average high of 28 °C82 °F and an average low of 23 °C74 °F, with about 265 mm10 in of precipitation. It is the 10th warmest month of the year and ranks 2nd for precipitation.
How September compares with other months
Compared with August, September is about the same temperature and drier by 133 mm5.2 in. Compared with October, September is 0.6 °C1.2 °F cooler on average and wetter by 56 mm2.2 in. Daylight lasts about 12.1 hours around the middle of the month. Average relative humidity is 88% and the average cloud amount 86%.
Is September a good time to visit Monrovia?
September is not among the most comfortable months by our comfort score: it is fairly wet (265 mm10 in) and it is humid (88%). The most comfortable months in Monrovia are November–April.
What to wear in September
For Monrovia in September, pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
September in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Monrovia | 2882 | 2374 | 26510 |
| Kenema | 2882 | 2271 | 35514 |
| Bo | 2882 | 2271 | 34814 |
| Koidu | 2781 | 2169 | 36714 |
| Nzérékoré | 2781 | 2068 | 31612 |
| Kissidougou | 2781 | 2068 | 30512 |
| Freetown | 2781 | 2475 | 40016 |
| Man | 2882 | 2170 | 26210 |
| Duekoué | 2883 | 2170 | 2178.5 |
Nearby places that are more than 1 °C1.8 °F cooler: Koidu, Nzérékoré and Kissidougou.
Other months in Monrovia
- January31 °C88 °F / 23 °C73 °F
- February31 °C88 °F / 24 °C75 °F
- March31 °C88 °F / 25 °C76 °F
- April31 °C87 °F / 25 °C77 °F
- May30 °C86 °F / 25 °C77 °F
- June29 °C84 °F / 24 °C75 °F
- July28 °C82 °F / 23 °C74 °F
- August27 °C81 °F / 23 °C73 °F
- September28 °C82 °F / 23 °C74 °F
- October28 °C83 °F / 24 °C75 °F
- November29 °C85 °F / 24 °C75 °F
- December30 °C86 °F / 23 °C74 °F
Frequently asked questions
How warm is Monrovia in September?
In September the average high in Monrovia is 28 °C (82 °F) and the average low is 23 °C (74 °F).
Does it rain a lot in Monrovia in September?
On average about 265 mm (10.4 in) of precipitation falls in September; it ranks 2nd of the 12 months.
Is September the warmest month in Monrovia?
No. The warmest month in Monrovia is February, with an average high of 31 °C (88 °F). The coldest month is August, with an average low of 23 °C (73 °F).
How long is the day in Monrovia in September?
In the middle of September the day in Monrovia lasts about 12.1 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Monrovia in September?
The average relative humidity in September is about 88%. Combined with warm days, it can feel muggy.
How cloudy is Monrovia in September?
On average about 86% of the sky is covered by cloud in September. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.