Suwanee weather in May

In May, Suwanee sees average daytime highs of 79°F and overnight lows near 60°F, with 3.4 in of rain across 9.8 wet days and about 13.7 hours of daylight. It is the 5th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 76°F in the first days to 82°F by the end. The sky is clear or mostly clear about 34% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of May to 14 h 06 min by month's end. Set against the rest of the year, May is Suwanee's 5th-clearest and 8th-windiest month. For the whole year in context, see Suwanee's year-round climate.

Daytime high
79°
5th warmest
Overnight low
60°
8th coldest
Rainfall
3.4 in
9.8 wet days
Daylight
13 h 48 min
5:40 AM – 7:25 PM
Cloud cover
56%
5th clearest
Wind
6 mph
8th windiest
Solar energy
6.06 kWh/m²
Travel score
6.7
out of 10

Suwanee is city in Gwinnett County, Georgia, U.S..

Density
659/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 76°F in the first days to 82°F by the end.

A typical May day in Suwanee reaches about 79°F in the afternoon and slips back to 60°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 70°F and 87°F. Set against its neighbours, May runs about 7°F warmer than April and about 6°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17555
27656
37656
47656
57657
67757
77757
87758
97758
107858
117859
127859
137859
147960
157960
167960
177960
188061
198061
208061
218062
228062
238162
248163
258163
268263
278264
288264
298264
308265
318365

How May really feels in Suwanee

Once humidity and wind are folded in, May averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Suwanee weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan52° / 35°4.610.40.6102.9
Feb56° / 37°4.69.90.510.73.8
Mar64° / 44°4.6100.111.75.7
Apr72° / 51°3.99.5012.86.8
May79° / 60°3.49.8013.76.7
Jun85° / 68°4.113.7014.24.8
Jul88° / 71°4.014.90144.0
Aug87° / 70°4.212.8013.34.4
Sep82° / 64°3.68.7012.26.4
Oct72° / 53°3.47.2011.17.3
Nov62° / 42°3.98.4010.25.7
Dec54° / 37°4.510.30.39.83.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25347
35446
45446
55347
65446
75347
85347
95248
105347
115347
125347
135347
145347
155347
165347
175248
185248
195347
205248
215248
225149
235149
245050
255050
265050
275050
284951
294951
304852
314852

Chance of precipitation in May

Any precipitation

Suwanee gets around 3.4 in of rain over 9.8 wet days in May, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 32% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
132
232
331
431
531
631
731
831
931
1031
1131
1231
1331
1431
1531
1631
1731
1831
1931
2032
2132
2232
2333
2433
2534
2635
2735
2836
2937
3038
3139

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the dry band about 32% of days. Sticky, muggy-or-worse air turns up on roughly 19% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
154241840
252241950
351242050
448242160
546242270
645242380
743242490
8422425100
9402425110
10392426120
11372426130
12362327140
13352327150
14342328160
15322228170
16312228180
17302229190
18292129201
19282129211
20272129221
21252130231
22242130242
23232030252
24212030262
25202030272
26182030293
27172030303
28152030313
29142030333
30132030344
31121929364

Wind in May

Winds average 6 mph in May.

Across May, daily wind ranges from about 5 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 18 min at the start of May to 14 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over May. Sunrise moves from 5:53 AM to 5:31 AM, and sunset from 7:14 PM to 7:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:537:14
213.45:527:15
313.45:517:15
413.45:507:16
513.55:497:17
613.55:487:18
713.55:477:18
813.65:467:19
913.65:457:20
1013.65:447:21
1113.65:447:22
1213.75:437:22
1313.75:427:23
1413.75:417:24
1513.75:407:25
1613.85:407:25
1713.85:397:26
1813.85:387:27
1913.85:377:28
2013.95:377:28
2113.95:367:29
2213.95:367:30
2313.95:357:31
2413.95:347:31
2514.05:347:32
2614.05:337:33
2714.05:337:33
2814.05:327:34
2914.05:327:35
3014.15:327:35
3114.15:317:36

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.06 kWh/m².

For context, solar energy here swings from a low near 2.3 kWh/m² to a high of 6.07 kWh/m² in June across the year — May's 6.06 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
46.0Bright
56.0Bright
66.0Bright
76.0Intense
86.0Intense
96.0Intense
106.0Intense
116.1Intense
126.1Intense
136.1Intense
146.1Intense
156.1Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.0Intense
276.0Intense
286.0Intense
296.0Intense
306.0Intense
316.0Bright
Planning a trip in May

Is May a good time to visit Suwanee?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.7
Sightseeing
3rd-best month of the year
6.4
Beach & pool
2nd-best month of the year

May is a reasonable time to visit Suwanee for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Suwanee in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Suwanee sees daytime highs around 79°F and nights near 60°F. Pack sun protection. Worth having: light clothes and rain gear. About 10 days see rain.

sun protectionlight clothesrain gear

UV index in Suwanee in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Suwanee peaks around June 23 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 23UV 10Dec 20UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7High
May8Very high
Jun10Very high
Jul10Very high
Aug8Very high
Sep7Very high
Oct5High
Nov4Moderate
Dec3Moderate

Air quality in Suwanee in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Suwanee is worst in July — around 21 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (January, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1621 µg/m³Jan 118 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb11Good
Mar13Moderate
Apr12Moderate
May15Moderate
Jun18Moderate
Jul21Moderate
Aug18Moderate
Sep13Moderate
Oct11Good
Nov10Good
Dec8Good
Location & terrain

Where is Suwanee?

Suwanee sits at 34.1°N, 84.1°W, 1,001 ft above sea level, in United States. The nearest listed city is Sugar Hill, 4.3 mi away.

Topography around Suwanee

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Suwanee.

Within 2 miles, the terrain around Suwanee has only modest variations in elevation — a maximum elevation change of 279 ft around an average of 1,030 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 797 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 3,950 ft.

The land around Suwanee is covered by trees (59%) and artificial surfaces (31%) within 2 miles, trees (61%) and artificial surfaces (25%) within 10 miles, and trees (82%) within 50 miles.

2 miles
279 ft
10 miles
797 ft
50 miles
3,950 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Sugar Hill 4.3 mi · Duluth 5.6 mi · Johns Creek 7.5 mi · Lawrenceville 8.1 mi · Peachtree Corners 11 mi · Norcross 11 mi · Alpharetta 13 mi · Snellville 14 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Suwanee (34.0515°, -84.0713°, elevation 1,001 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).