Climate averages 1991–2020

Savannah weather
in May.

A warm, moderately wet month: the 5th warmest and one of the driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 27.7°C Daytime mean, May

Average low 18.8°C Night-time mean, May

Rainfall 59 mm 8 days with ≥1 mm

Daylight 14 h Sunrise to sunset, per day

May is a warm month in Savannah: daytime highs average 27.7°C and nights cool to about 18.8°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 59 mm of rain on roughly 8 days, which makes May a moderately wet month (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 13 h 47 min on an average May day.

The nearest other city in this atlas is Charleston (134 km away). In May its highs average 26.2°C, 1.5°C cooler than Savannah, with 68 mm of rain.

Among the 498 cities listed in the United States, Savannah ranks joint 106th of 498 for the warmest May highs and joint 160th of 498 for the driest May (rainfall, lowest first). The mean May high of those 498 cities is 23.8°C; Savannah is 3.9°C warmer than that mean.

From May to June, average highs rise by 2.4°C to 30.1°C, and monthly rainfall rises from 59 mm to 117 mm.

The annual picture

May in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Savannah climate table

1991–2020

Monthly climate averages for Savannah, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	15.1°C6.5°C	6.5°C	88	8.8	10.310 h
February	16.9°C7.9°C	7.9°C	84	8.7	11.011 h
March	20.0°C10.7°C	10.7°C	80	8.2	12.012 h
April	23.8°C14.5°C	14.5°C	70	6.8	12.913 h
May, selected	27.7°C18.8°C	18.8°C	59	8.4	13.814 h
June	30.1°C22.5°C	22.5°C	117	15.4	14.214 h
July	31.5°C24.2°C	24.2°C	115	16.2	14.014 h
August	30.4°C23.9°C	23.9°C	150	18.8	13.313 h
September	28.4°C21.8°C	21.8°C	122	13.6	12.412 h
October	24.5°C16.7°C	16.7°C	97	7.8	11.411 h
November	19.9°C11.4°C	11.4°C	59	6.3	10.511 h
December	16.4°C8.1°C	8.1°C	86	8.8	10.110 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

May in nearby cities

Distance from Savannah

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Savannah) is explained once on the Savannah year overview and on the Sources, method and limits page.