Boston in Spring
In spring (March, April and May), Boston sees average daytime highs around 13°C and overnight lows near 6°C, with 139 mm of precipitation over about 31 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 9°C in early March to 17°C by late May. The sky is clear or mostly clear about 15% of the time across spring, and the air most often feels dry.
Spring is Boston's 3rd-best season to visit on our travel score. For the whole year in context, see Boston's year-round climate.
- Avg daytime high
- 13°C
- 3rd-warmest season
- Avg overnight low
- 6°C
- Precipitation
- 139 mm
- 31 wet days
- Avg wind
- 17 km/h
- Travel score
- 3.3
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Boston in Spring
Over the season highs climb from about 9°C in early March to 17°C by late May.
A typical spring day in Boston reaches about 13°C and drops to 6°C overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Boston
Once humidity and wind are folded in, spring brings about 0 days that feel above 32°C and 13 that feel at or below 0°C.
The story in spring is cold — wind chill drags the overnight "feels like" below the raw low.
Boston weather by month
How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 7° / 3° | 49 | 11.3 | 0.8 | 7.9 | 0.9 |
| Feb | 8° / 3° | 38 | 9.1 | 1.1 | 9.5 | 1.1 |
| Mar | 10° / 4° | 42 | 10.1 | 0.6 | 11.5 | 2.1 |
| Apr | 12° / 6° | 46 | 10.5 | 0.1 | 13.6 | 3.3 |
| May | 15° / 9° | 50 | 10 | 0 | 15.5 | 4.6 |
| Jun | 18° / 11° | 61 | 11.1 | 0 | 16.6 | 5.5 |
| Jul | 21° / 13° | 62 | 11.1 | 0 | 16.2 | 6.1 |
| Aug | 21° / 13° | 63 | 10.9 | 0 | 14.5 | 6.1 |
| Sep | 18° / 11° | 55 | 9.5 | 0 | 12.4 | 5.6 |
| Oct | 14° / 8° | 60 | 10.6 | 0 | 10.3 | 3.9 |
| Nov | 10° / 5° | 55 | 11.1 | 0.2 | 8.4 | 2.1 |
| Dec | 7° / 3° | 51 | 11 | 0.9 | 7.4 | 1.0 |
Cloud cover in Spring
The sky is clear or mostly clear about 15% of the time across spring.
Chance of precipitation in Spring
Boston gets around 139 mm of rain and snow over 31 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 17 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 10 h 24 min in early March to 16 h 12 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 3.9 kWh/m².
Is spring a good time to visit Boston?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a weaker month for outdoor sightseeing in Boston.
What to pack for Boston in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Boston sees daytime highs around 13°C and nights near 6°C. Pack a warm layer. Worth having: rain gear and sun protection. About 31 days see rain.
Sea temperature near Boston in Spring
The nearest coast averages about 9°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 29 km away) is warmest in August at about 18°C and coldest in February near 5°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 6 | 5 | 6 | 8 | 11 | 14 | 17 | 18 | 16 | 13 | 10 | 7 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 6 | Bracing |
| Feb | 5 | Bracing |
| Mar | 6 | Bracing |
| Apr | 8 | Bracing |
| May | 11 | Bracing |
| Jun | 14 | Bracing |
| Jul | 17 | Cool |
| Aug | 18 | Cool |
| Sep | 16 | Cool |
| Oct | 13 | Bracing |
| Nov | 10 | Bracing |
| Dec | 7 | Bracing |
UV index in Boston in Spring
Clear-sky midday UV across spring averages around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Boston peaks around August 11 at about 6 (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 6 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 3 | 3 | 6 | 6 | 6 | 6 | 4 | 2 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | High | High | Moderate | Low | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 3 | Moderate |
| Apr | 3 | Moderate |
| May | 6 | High |
| Jun | 6 | High |
| Jul | 6 | High |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 2 | Low |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Boston?
Boston sits at 53.0°N, 0.0°W, 9 m above sea level, in United Kingdom. The nearest listed city is Spalding, 23 km away.
Topography around Boston
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Boston.
Within 3 km, the terrain around Boston has only modest variations in elevation — a maximum elevation change of 21 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 23 m; within 80 km, only modest variations in elevation — a maximum elevation change of 249 m.
The land around Boston is covered by cropland (38%), artificial surfaces (26%) and grassland (23%) within 3 km, cropland (68%) within 16 km, and cropland (54%) within 80 km.
United Kingdom travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type D / G / M
- 230 V · 50 Hz
- Prices
- ≈ 89% of US
- price level, 2025
- GDP per capita
- $57,602
- 2025
- Happiness
- 6.7 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.1
- per 100k, 2021
- Road deaths
- 3.2
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
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 Boston (52.9763°, -0.0266°, elevation 9 m), 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.