East Boston weather in April

In April, East Boston sees average daytime highs of 53°F and overnight lows near 40°F, with 4.1 in of precipitation across 10.7 wet days and about 13.1 hours of daylight. It is the 7th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 49°F in the first days to 57°F by the end. The sky is clear or mostly clear about 24% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of April to 13 h 48 min by month's end. Set against the rest of the year, April is East Boston's 12th-clearest and 6th-windiest month. For the whole year in context, see East Boston's year-round climate.

Daytime high
53°
7th warmest
Overnight low
40°
6th coldest
Precipitation
4.1 in
10.7 wet days
Daylight
13 h 06 min
5:10 AM – 6:19 PM
Cloud cover
65%
12th clearest
Wind
9 mph
6th windiest
Solar energy
4.93 kWh/m²
Travel score
3.0
out of 10

East Boston is neighborhood of Boston, Massachusetts, United States.

Founded
1836

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 49°F in the first days to 57°F by the end.

A typical April day in East Boston reaches about 53°F in the afternoon and slips back to 40°F overnight — a 13°F spread between the day's warmth and the night's chill. On most days the high lands between 44°F and 64°F. Set against its neighbours, April runs about 10°F warmer than March and about 9°F cooler than May.

20°40°60°80°151015202530
Avg high (°F)Avg low (°F)
14836
24936
34936
44937
55037
65037
75138
85138
95138
105239
115239
125339
135340
145340
155440
165441
175441
185541
195542
205542
215542
225643
235643
245643
255644
265744
275744
285744
295845
305845

How April really feels in East Boston

Once humidity and wind are folded in, April averages 0 days that feel above 90°F and 9 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
9
wind chill below the day's low

The story in April is cold — wind chill drags the overnight "feels like" below the raw low.

East Boston weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan35° / 23°3.6105.89.30.0
Feb37° / 24°3.395.310.30.0
Mar43° / 31°4.511.34.511.60.6
Apr53° / 40°4.110.71.113.13.0
May63° / 49°3.310.7014.45.3
Jun72° / 59°3.510.30156.5
Jul78° / 65°2.99.9014.86.8
Aug77° / 64°3.39013.77.1
Sep70° / 58°3.48.2012.36.9
Oct60° / 47°4.310.10.210.84.9
Nov50° / 38°3.89.60.89.62.2
Dec40° / 29°4.510.54.590.2

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in April, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of April, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14060
23961
33961
43961
53862
63862
73862
83763
93862
103862
113862
123862
133961
143961
153961
164060
174159
184159
194159
204258
214258
224258
234159
244159
254159
264159
274159
284060
294060
304060

Chance of precipitation in April

Any precipitationSnow

East Boston gets around 4.1 in of rain and snow over 10.7 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 36% and peaks near 39% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
1398
2398
3397
4397
5397
6396
7396
8386
9375
10375
11365
12364
13354
14354
15353
16353
17353
18342
19342
20342
21342
22342
23342
24342
25351
26351
27351
28361
29361
30361

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
17991
18991
19991
20991
21991
22991
23991
24991
25982
26982
27982
28973
29973
30964

Wind in April

Winds average 9 mph in April.

Across April, 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.

051015151015202530
Wind speed (mph)Feels
110light breeze
210light breeze
310light breeze
410light breeze
510light breeze
610light breeze
710light breeze
89light breeze
99light breeze
109light 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

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 84 minutes over April. Sunrise moves from 5:36 AM to 4:48 AM, and sunset from 6:02 PM to 6:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:366:02
212.55:346:03
312.55:326:04
412.65:316:05
512.65:296:06
612.75:276:07
712.75:256:09
812.85:246:10
912.85:226:11
1012.95:206:12
1112.95:186:13
1213.05:176:14
1313.05:156:15
1413.15:136:17
1513.15:126:18
1613.15:106:19
1713.25:086:20
1813.25:076:21
1913.35:056:22
2013.35:036:23
2113.45:026:25
2213.45:006:26
2313.54:596:27
2413.54:576:28
2513.64:566:29
2613.64:546:30
2713.64:536:31
2813.74:516:33
2913.74:506:34
3013.84:486:35

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.93 kWh/m².

For context, solar energy here swings from a low near 1.57 kWh/m² to a high of 5.97 kWh/m² in July across the year — April's 4.93 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.5Bright
44.5Bright
54.6Bright
64.6Bright
74.7Bright
84.7Bright
94.7Bright
104.8Bright
114.8Bright
124.9Bright
134.9Bright
144.9Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
Planning a trip in April

Hazard calendar for East Boston

In seasonPeak

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

East Boston 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 April a good time to visit East Boston?

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

3.0
Sightseeing
7th-best month of the year
0.0
Beach & pool
7th-best month of the year

April is a weaker month for outdoor sightseeing in East Boston.

What to pack for East Boston in April

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

In April, East Boston sees daytime highs around 53°F and nights near 40°F. Pack a warm layer. Worth having: rain gear and sun protection. About 11 days see rain.

a warm layerrain gearsun protection

Sea temperature near East Boston in April

The nearest coast averages about 42°F in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 8 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
Oct56Bracing
Nov50Bracing
Dec46Bracing

UV index in East Boston in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in East Boston peaks around July 10 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 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 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar4Moderate
Apr5High
May7Very high
Jun7Very high
Jul7Very high
Aug5Moderate
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in East Boston in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in East Boston is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1715 µg/m³Nov 188 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb13Moderate
Mar13Moderate
Apr13Moderate
May14Moderate
Jun13Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct9Good
Nov8Good
Dec9Good
Location & terrain

Where is East Boston?

East Boston sits at 42.4°N, 71.0°W, 13 ft above sea level, in United States. The nearest listed city is Charlestown, 1.2 mi away.

Topography around East Boston

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

Within 2 miles, the terrain around East Boston has only modest variations in elevation — a maximum elevation change of 177 ft around an average of 20 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 387 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,165 ft.

The land around East Boston is covered by artificial surfaces (64%) and water (24%) within 2 miles, trees (34%), water (33%) and artificial surfaces (28%) within 10 miles, and trees (60%) and water (31%) within 50 miles.

2 miles
177 ft
10 miles
387 ft
50 miles
2,165 ft
treesgrasslandartificial surfacesbare terrainwaterwetland
April weather nearby: Charlestown 1.2 mi · Chelsea 1.2 mi · Boston 1.9 mi · Orient Heights 1.9 mi · Everett 2.5 mi · Revere 2.5 mi · Winthrop 3.1 mi · South Boston 3.1 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 East Boston (42.3751°, -71.0392°, elevation 13 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. 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).