Monrovia weather in September
September is one of the least pleasant months in Monrovia: highs of 28°C (82°F) and about 265 mm (10.4 in) of rain on average. Nights average 23°C (74°F) and cloud cover 86% (NASA POWER, 2001–2025 averages). The sea averages 27°C (81°F). It is the 2nd wettest month of the year and the 2nd coolest. Compared with August, it is about as warm and drier; October brings highs of 28°C (83°F) and 210 mm (8.3 in) of rain.
Is September a good time to visit Monrovia?
least pleasant month Weather score 39/100.
September is one of the least pleasant months for weather in Monrovia. For better conditions, consider Nov–Apr.
Does it rain a lot in Monrovia in September?
Yes, it is one of the rainy months: about 265 mm (10.4 in) falls in an average September. It is the 2nd wettest month of the year.
How warm is Monrovia in September?
Days average 28°C (82°F) and nights 23°C (74°F).
Monrovia weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 31°C (87°F) | 23°C (73°F) | 11 mm | 44% | 30°C (85°F) | best |
| February | 31°C (87°F) | 24°C (75°F) | 23 mm | 53% | 29°C (85°F) | best |
| March | 31°C (87°F) | 24°C (76°F) | 44 mm | 61% | 29°C (83°F) | best |
| April | 31°C (87°F) | 25°C (77°F) | 59 mm | 70% | 29°C (85°F) | best |
| May | 30°C (86°F) | 25°C (76°F) | 109 mm | 78% | 30°C (85°F) | fair |
| June | 29°C (83°F) | 24°C (75°F) | 226 mm | 81% | 29°C (84°F) | least pleasant |
| July | 28°C (82°F) | 23°C (73°F) | 257 mm | 84% | 28°C (82°F) | least pleasant |
| August | 27°C (81°F) | 23°C (73°F) | 399 mm | 88% | 27°C (80°F) | least pleasant |
| September | 28°C (82°F) | 23°C (74°F) | 265 mm | 86% | 27°C (81°F) | least pleasant |
| October | 28°C (83°F) | 24°C (75°F) | 210 mm | 78% | 28°C (83°F) | least pleasant |
| November | 29°C (84°F) | 24°C (75°F) | 79 mm | 69% | 29°C (84°F) | best |
| December | 30°C (86°F) | 23°C (74°F) | 37 mm | 51% | 29°C (84°F) | best |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months