Hanahan, South Carolina Weather
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Climate of Hanahan: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Hanahan, with average daytime highs around 32°C. January is the coolest, when nights typically fall to about 4°C.
The area receives about 1250 mm of rain in a typical year. Most of it falls from June to October (around 55% of the yearly total), and August is the wettest month at roughly 171 mm.
For outdoor plans and travel, March to May and November usually offer the most comfortable weather in Hanahan, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 14° | 4° | 61 mm | 80% |
| Feb | 16° | 6° | 84 mm | 80% |
| Mar | 20° | 9° | 84 mm | 78% |
| Apr | 24° | 13° | 82 mm | 75% |
| May | 28° | 18° | 92 mm | 73% |
| Jun | 31° | 22° | 140 mm | 76% |
| Jul | 32° | 24° | 147 mm | 76% |
| Aug | 31° | 23° | 171 mm | 79% |
| Sep | 29° | 21° | 119 mm | 80% |
| Oct | 25° | 15° | 105 mm | 78% |
| Nov | 20° | 9° | 69 mm | 79% |
| Dec | 16° | 6° | 91 mm | 82% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Hanahan. Values describe typical conditions, not a forecast.
About Hanahan weather
Hanahan, in South Carolina's humid subtropical climate, coastal and low-lying for much of the state, is positioned about 18 km north-west of Charleston. The warmer months mean hot, humid summers (June–August) with highs commonly in the low-to-mid 30s°C. Finally, there's mild winters (December–February), rarely dropping below freezing near the coast. This page shows live, auto-refreshing weather for Hanahan: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/New_York.
Frequently asked questions
Hanahan is about 18 km north-west of Charleston, in South Carolina.
Hanahan sees mild winters (December–February), rarely dropping below freezing near the coast.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Hanahan's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Hanahan, with average daytime highs of about 32°C and nights around 24°C.
The coldest nights come in January, when the average low is about 4°C and daytime highs reach around 14°C.
Hanahan receives about 1250 mm of rain in a typical year. August is the wettest month at roughly 171 mm, and the main rainy period is June to October.
March to May and November usually offer the most comfortable weather in Hanahan, with mild daytime temperatures and little rain.
In November Hanahan typically sees daytime highs near 20°C and lows near 9°C, with about 69 mm of rain over the month and average humidity around 79%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
The current temperature for Hanahan updates automatically at the top of this page — scroll to the hourly strip below to see how it's expected to change over the day.
Hanahan's day-to-day weather follows the broader pattern of South Carolina described above. See the hourly weather forecast or the air quality index for more detail.