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Carolina Weather by Month
Average temperatures, rainfall and humidity for Carolina, Puerto Rico, month by month, built from OpenWeather’s historical records. Use it to see what a typical Carolina month looks like before you travel — then check the live Carolina forecast for the days ahead.
Warmest month
August
31°C average high
Coolest month
February
22°C average low
Wettest month
September
132 mm of rain
Driest month
June
74 mm of rain
Average temperature and rainfall in Carolina by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 28°C | 22°C | 18°C / 31°C | 92 mm | 78% | 15 km/h |
| February | 28°C | 22°C | 19°C / 31°C | 80 mm | 77% | 16 km/h |
| March | 28°C | 22°C | 20°C / 36°C | 76 mm | 75% | 16 km/h |
| April | 29°C | 23°C | 20°C / 33°C | 89 mm | 76% | 16 km/h |
| May | 30°C | 24°C | 21°C / 33°C | 103 mm | 78% | 16 km/h |
| June | 31°C | 25°C | 22°C / 37°C | 74 mm | 77% | 18 km/h |
| July | 31°C | 26°C | 23°C / 35°C | 90 mm | 79% | 18 km/h |
| August | 31°C | 26°C | 23°C / 35°C | 104 mm | 80% | 17 km/h |
| September | 31°C | 26°C | 23°C / 35°C | 132 mm | 80% | 14 km/h |
| October | 31°C | 25°C | 22°C / 35°C | 123 mm | 80% | 13 km/h |
| November | 30°C | 24°C | 21°C / 33°C | 125 mm | 80% | 14 km/h |
| December | 28°C | 23°C | 18°C / 34°C | 98 mm | 79% | 15 km/h |
Best time to visit Carolina
The most comfortable time to visit Carolina is generally January to March, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around September, totalling about 1,187 mm a year.
Travellers who prefer heat should aim for August, when highs average 31°C. September is the month to avoid if rain would spoil your plans — it averages 132 mm, roughly 2× the rainfall of the driest month (June).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Carolina forecast for what is happening now.