Hanover weather in May

In May, Hanover sees average daytime highs of 61°F and overnight lows near 50°F, with 3.3 in of rain across 11 wet days and about 14.4 hours of daylight. It is the 5th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 57°F in the first days to 65°F by the end. The sky is clear or mostly clear about 26% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 48 min at the start of May to 14 h 48 min by month's end. Set against the rest of the year, May is Hanover's 10th-clearest and 8th-windiest month. For the whole year in context, see Hanover's year-round climate.

Daytime high
61°
5th warmest
Overnight low
50°
8th coldest
Rainfall
3.3 in
11 wet days
Daylight
14 h 24 min
4:28 AM – 6:51 PM
Cloud cover
64%
10th clearest
Wind
9 mph
8th windiest
Solar energy
5.69 kWh/m²
Travel score
4.9
out of 10

Hanover is town in Massachusetts, United States.

Founded
1649

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 57°F in the first days to 65°F by the end.

A typical May day in Hanover reaches about 61°F in the afternoon and slips back to 50°F overnight — a 11°F spread between the day's warmth and the night's chill. On most days the high lands between 52°F and 71°F. Set against its neighbours, May runs about 9°F warmer than April and about 9°F cooler than June.

30°40°50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
15746
25746
35746
45847
55847
65847
75847
85948
95948
105948
116048
126049
136049
146049
156149
166150
176150
186250
196251
206251
216351
226352
236452
246452
256453
266453
276553
286554
296554
306654
316655

How May really feels in Hanover

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.

Hanover weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 26°4.110.65.29.30.0
Feb38° / 27°3.59.5510.30.0
Mar43° / 33°4.811.34.511.70.6
Apr52° / 41°4.211.30.913.12.7
May61° / 50°3.311014.44.9
Jun71° / 59°3.49.20156.6
Jul77° / 66°2.88.9014.87.0
Aug76° / 65°3.39013.77.2
Sep70° / 59°3.78.2012.36.8
Oct60° / 50°4.69.60.110.85.0
Nov51° / 40°4.19.70.59.62.4
Dec42° / 32°4.811.33.590.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24159
34159
44159
54060
64060
74060
84060
94060
103961
114060
124060
134060
144159
154159
164159
174159
184159
194159
204357
214357
224357
234357
244456
254456
264456
274456
284456
294555
304456
314456

Chance of precipitation in May

Any precipitation

Hanover gets around 3.3 in of rain over 11 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 36% and peaks near 39% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
239
338
438
537
637
737
837
937
1037
1138
1238
1338
1438
1537
1637
1737
1837
1936
2036
2136
2235
2334
2434
2533
2632
2732
2831
2931
3031
3131

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 85% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
197300
296400
396400
495500
595500
695500
794600
894600
994600
1094600
1192710
1292710
1392710
1492710
1590820
1690820
1789920
18871030
19861130
20841240
21821350
22811450
23791560
24761770
25741880
26721990
27712090
286921100
296722110
306522121
316323131

Wind in May

Winds average 9 mph in May.

Across May, daily wind ranges from about 9 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
110light breeze
210light breeze
310light breeze
410light breeze
510light breeze
610light breeze
710light breeze
810light breeze
910light breeze
1010light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze
319light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 48 min at the start of May to 14 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over May. Sunrise moves from 4:46 AM to 4:16 AM, and sunset from 6:35 PM to 7:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.84:466:35
213.84:456:36
313.94:446:37
413.94:426:38
514.04:416:39
614.04:406:40
714.04:386:41
814.14:376:42
914.14:366:43
1014.24:356:44
1114.24:346:46
1214.24:326:47
1314.34:316:48
1414.34:306:49
1514.34:296:50
1614.44:286:51
1714.44:276:52
1814.44:266:53
1914.54:256:54
2014.54:246:55
2114.54:236:56
2214.64:236:57
2314.64:226:58
2414.64:216:59
2514.74:207:00
2614.74:197:01
2714.74:197:02
2814.74:187:02
2914.84:177:03
3014.84:177:04
3114.84:167:05

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.69 kWh/m².

For context, solar energy here swings from a low near 1.6 kWh/m² to a high of 6.13 kWh/m² in July across the year — May's 5.69 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.6Bright
135.6Bright
145.6Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
276.0Bright
286.0Bright
296.0Bright
306.0Bright
316.0Bright
Planning a trip in May

Hazard calendar for Hanover

In seasonPeak

None of Hanover's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Hanover sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Hanover?

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

4.9
Sightseeing
6th-best month of the year
1.0
Beach & pool
5th-best month of the year

May is a reasonable time to visit Hanover for sightseeing.

What to pack for Hanover in May

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

In May, Hanover sees daytime highs around 61°F and nights near 50°F. Worth packing: a warm layer, rain gear and sun protection. About 11 days see rain.

a warm layerrain gearsun protection

Sea temperature near Hanover in May

The nearest coast averages about 50°F in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 9 mi away) is warmest in August at about 66°F and coldest in February near 38°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

40°50°60°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°F)Comfort
Jan41Bracing
Feb38Bracing
Mar38Bracing
Apr42Bracing
May50Bracing
Jun58Bracing
Jul65Cool
Aug66Cool
Sep63Cool
Oct57Bracing
Nov51Bracing
Dec46Bracing

UV index in Hanover in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hanover peaks around July 10 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 23 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighHighModerateLowJul 10UV 8Dec 23UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar4Moderate
Apr5High
May7Very high
Jun8Very high
Jul8Very high
Aug5Moderate
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Hanover?

Hanover sits at 42.1°N, 70.8°W, 52 ft above sea level, in United States. The nearest listed city is Rockland, 5.6 mi away.

Topography around Hanover

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

Within 2 miles, the terrain around Hanover has only modest variations in elevation — a maximum elevation change of 240 ft around an average of 89 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 302 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 935 ft.

The land around Hanover is covered by trees (85%) within 2 miles, trees (69%) within 10 miles, and trees (47%) and water (45%) within 50 miles.

2 miles
240 ft
10 miles
302 ft
50 miles
935 ft
treesgrasslandartificial surfaceswaterwetland
May weather nearby: Rockland 5.6 mi · Abington 6.8 mi · Duxbury 8.7 mi · Weymouth 9.9 mi · Brockton 11 mi · Braintree 12 mi · Randolph 12 mi · Quincy 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 Hanover (42.1132°, -70.812°, elevation 52 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).