Saint John in Spring
In spring (March, April and May), Saint John sees average daytime highs around 6°C and overnight lows near 1°C, with 321 mm of precipitation over about 36 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 0°C in early March to 13°C by late May. The sky is clear or mostly clear about 21% of the time across spring, and the air most often feels dry.
Spring is Saint John's 3rd-best season to visit on our travel score. For the whole year in context, see Saint John's year-round climate.
- Avg daytime high
- 6°C
- 3rd-warmest season
- Avg overnight low
- 1°C
- Precipitation
- 321 mm
- 36 wet days
- Avg wind
- 18 km/h
- Travel score
- 1.0
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Saint John in Spring
Over the season highs climb from about 0°C in early March to 13°C by late May.
A typical spring day in Saint John reaches about 6°C and drops to 1°C overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Saint John
Once humidity and wind are folded in, spring brings about 0 days that feel above 32°C and 62 that feel at or below 0°C.
The story in spring is cold — wind chill drags the overnight "feels like" below the raw low.
Saint John 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 | -2° / -9° | 112 | 11.6 | 8.4 | 8.9 | 0.0 |
| Feb | -1° / -8° | 95 | 10.3 | 8.2 | 10.1 | 0.0 |
| Mar | 2° / -4° | 112 | 11.4 | 7.2 | 11.6 | 0.0 |
| Apr | 6° / 1° | 105 | 12.3 | 3.4 | 13.2 | 0.5 |
| May | 11° / 6° | 104 | 12.3 | 0.2 | 14.6 | 2.4 |
| Jun | 15° / 11° | 108 | 12.1 | 0 | 15.4 | 4.3 |
| Jul | 18° / 14° | 91 | 11 | 0 | 15.1 | 5.6 |
| Aug | 19° / 14° | 81 | 9.3 | 0 | 13.9 | 6.1 |
| Sep | 16° / 12° | 108 | 10 | 0 | 12.3 | 5.1 |
| Oct | 12° / 7° | 133 | 10.9 | 0.2 | 10.7 | 3.1 |
| Nov | 7° / 2° | 128 | 11.8 | 2.3 | 9.3 | 0.8 |
| Dec | 2° / -4° | 137 | 13.1 | 6.9 | 8.6 | 0.0 |
Cloud cover in Spring
The sky is clear or mostly clear about 21% of the time across spring.
Chance of precipitation in Spring
Saint John gets around 321 mm of rain and snow over 36 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 18 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 10 h 48 min in early March to 15 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 4.6 kWh/m².
Is spring a good time to visit Saint John?
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 Saint John.
What to pack for Saint John in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Saint John sees daytime highs around 6°C and nights near 1°C. Pack a warm layer and a heavy coat. Worth having: rain gear, sun protection and a windbreaker. About 36 days see rain.
Sea temperature near Saint John in Spring
The nearest coast averages about 4°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 17 km away) is warmest in August at about 14°C and coldest in March near 2°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) | 5 | 3 | 2 | 3 | 6 | 9 | 13 | 14 | 13 | 12 | 10 | 7 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 5 | Bracing |
| Feb | 3 | Bracing |
| Mar | 2 | Bracing |
| Apr | 3 | Bracing |
| May | 6 | Bracing |
| Jun | 9 | Bracing |
| Jul | 13 | Bracing |
| Aug | 14 | Bracing |
| Sep | 13 | Bracing |
| Oct | 12 | Bracing |
| Nov | 10 | Bracing |
| Dec | 7 | Bracing |
UV index in Saint John in Spring
Clear-sky midday UV across spring averages 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 Saint John peaks around July 11 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 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 3 | 5 | 7 | 7 | 7 | 6 | 5 | 3 | 2 | 1 |
| Level | Low | Low | Moderate | Moderate | High | Very high | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 3 | Moderate |
| Apr | 5 | Moderate |
| May | 7 | High |
| Jun | 7 | Very high |
| Jul | 7 | Very high |
| Aug | 6 | High |
| Sep | 5 | Moderate |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Saint John?
Saint John sits at 45.3°N, 66.1°W, 30 m above sea level, in Canada. The nearest listed city is Saint John West, 2.0 km away.
Topography around Saint John
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Saint John.
Within 3 km, the terrain around Saint John has only modest variations in elevation — a maximum elevation change of 95 m around an average of 16 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 234 m; within 80 km, significant variations in elevation — a maximum elevation change of 449 m.
The land around Saint John is covered by water (38%), artificial surfaces (29%) and trees (21%) within 3 km, trees (52%) and water (38%) within 16 km, and trees (49%) and water (45%) within 80 km.
Canada travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 83% of US
- price level, 2025
- GDP per capita
- $55,698
- 2025
- Happiness
- 6.7 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 2
- per 100k, 2023
- Road deaths
- 5.3
- 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 Saint John (45.2708°, -66.0562°, elevation 30 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.