Monrovia is warmest in February, averaging 32° by day and 24° at night. The wettest month is August with 419 mm, and the year brings about 1743 mm in total.
Month by month
| Month | High | Low | Rain | Sea | Daylight | Good for |
|---|---|---|---|---|---|---|
| January | 31° | 23° | 9 mm | 28° | 11.7 h | Beach weather |
| February | 32° | 24° | 22 mm | 27° | 11.8 h | Beach weather |
| March | 31° | 25° | 53 mm | 27° | 12.0 h | Beach weather |
| April | 31° | 25° | 114 mm | 29° | 12.1 h | Mild |
| May | 30° | 25° | 143 mm | 29° | 12.3 h | Mild |
| June | 29° | 24° | 225 mm | 29° | 12.4 h | Rainy season |
| July | 28° | 23° | 239 mm | 28° | 12.3 h | Rainy season |
| August | 28° | 23° | 419 mm | 27° | 12.2 h | Rainy season |
| September | 28° | 24° | 309 mm | 27° | 12.0 h | Rainy season |
| October | 29° | 24° | 149 mm | 28° | 11.9 h | Mild |
| November | 30° | 24° | 45 mm | 29° | 11.7 h | Beach weather |
| December | 31° | 23° | 16 mm | 29° | 11.6 h | Beach weather |
High and low are average daily maximum and minimum, rain is typical monthly total, sea is the average surface temperature, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER and NOAA MUR — averages, not promises.
When to go
Beach weather: January, February, March, November and December — highs around 31°, nights no colder than 23°, and at most 53 mm of rain in a month. The sea sits at 27–29° then.
Wet season: June, July, August and September — up to 419 mm in a single month.