Saint John weather in April

In April, Saint John sees average daytime highs of 6°C and overnight lows near 1°C, with 105 mm of precipitation across 12.3 wet days and about 13.2 hours of daylight. It is the 8th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 4°C in the first days to 8°C by the end. The sky is clear or mostly clear about 20% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 30 min at the start of April to 14 hours by month's end. Set against the rest of the year, April is Saint John's 9th-clearest and 7th-windiest month. For the whole year in context, see Saint John's year-round climate.

Daytime high: 6°; 8th warmest
Overnight low: 1°; 5th coldest
Precipitation: 105 mm; 12.3 wet days
Daylight: 13 h 18 min; 5:46 AM – 7:03 PM
Cloud cover: 69%; 9th clearest
Wind: 18 km/h; 7th windiest
Solar energy: 4.67 kWh/m²
Travel score: 0.5; out of 10

Saint John is city in New Brunswick, Canada.

Air quality: Excellent; PM2.5 5 µg/m³ · 2019
Density: 227/km²; people per km²
Founded: 1604

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

← March Saint John year-round climate May →Best places to visit in April

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 4°C in the first days to 8°C by the end.

A typical April day in Saint John reaches about 6°C in the afternoon and slips back to 1°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 3°C and 9°C. Set against its neighbours, April runs about 4°C warmer than March and about 5°C cooler than May.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	4	4	4	4	5	5	5	5	5	5	5	6	6	6	6	6	6	7	7	7	7	7	7	7	8	8	8	8	8	8
Avg low (°C)	-1	-1	-1	0	0	0	0	0	0	1	1	1	1	1	1	1	2	2	2	2	2	2	2	3	3	3	3	3	3	4

	Avg high (°C)	Avg low (°C)
1	4	-1
2	4	-1
3	4	-1
4	4	0
5	5	0
6	5	0
7	5	0
8	5	0
9	5	0
10	5	1
11	5	1
12	6	1
13	6	1
14	6	1
15	6	1
16	6	1
17	6	2
18	7	2
19	7	2
20	7	2
21	7	2
22	7	2
23	7	2
24	7	3
25	8	3
26	8	3
27	8	3
28	8	3
29	8	3
30	8	4

How April really feels in Saint John

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 30 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

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

Saint John weather by month

How April compares with the rest of the year at a glance. April is the 8th-warmest and 8th-wettest month here — the current month is highlighted below.

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 April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 15% of April, with mostly cloudy or overcast conditions the remaining 65%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	34	34	33	35	34	34	35	34	35	35	35	37	37	37	37	36	36	36	36	36	36	36	34	34	35	35	34	34	34	34
Cloudier (%)	66	66	67	65	66	66	65	66	65	65	65	63	63	63	63	64	64	64	64	64	64	64	66	66	65	65	66	66	66	66

	Clearer (%)	Cloudier (%)
1	34	66
2	34	66
3	33	67
4	35	65
5	34	66
6	34	66
7	35	65
8	34	66
9	35	65
10	35	65
11	35	65
12	37	63
13	37	63
14	37	63
15	37	63
16	36	64
17	36	64
18	36	64
19	36	64
20	36	64
21	36	64
22	36	64
23	34	66
24	34	66
25	35	65
26	35	65
27	34	66
28	34	66
29	34	66
30	34	66

Chance of precipitation in April

Any precipitationSnow

Saint John gets around 105 mm of rain and snow over 12.3 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 40% and peaks near 42% on the wettest days, and about 3 days bring snow.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	40	40	41	41	41	42	42	41	41	41	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40	41	41
Snow chance (%)	19	19	19	18	18	17	17	16	15	14	13	12	11	10	10	9	8	8	7	7	6	6	5	5	5	5	4	4	4	4

	Rain chance (%)	Snow chance (%)
1	40	19
2	40	19
3	41	19
4	41	18
5	41	18
6	42	17
7	42	17
8	41	16
9	41	15
10	41	14
11	40	13
12	40	12
13	40	11
14	40	10
15	40	10
16	40	9
17	40	8
18	40	8
19	40	7
20	40	7
21	40	6
22	40	6
23	40	5
24	40	5
25	40	5
26	40	5
27	40	4
28	40	4
29	41	4
30	41	4

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

Wind in April

Winds average 18 km/h in April.

Across April, daily wind ranges from about 17 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	19	19	19	19	19	19	19	19	19	19	19	18	18	18	18	18	18	18	18	18	17	17	17	17	17	17	17	17	17	17
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	19	light breeze
2	19	light breeze
3	19	light breeze
4	19	light breeze
5	19	light breeze
6	19	light breeze
7	19	light breeze
8	19	light breeze
9	19	light breeze
10	19	light breeze
11	19	light breeze
12	18	light breeze
13	18	light breeze
14	18	light breeze
15	18	light breeze
16	18	light breeze
17	18	light breeze
18	18	light breeze
19	18	light breeze
20	18	light breeze
21	17	light breeze
22	17	light breeze
23	17	light breeze
24	17	light breeze
25	17	light breeze
26	17	light breeze
27	17	light breeze
28	17	light breeze
29	17	light breeze
30	17	light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 30 min at the start of April to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 90 minutes over April. Sunrise moves from 6:15 AM to 5:22 AM, and sunset from 6:43 PM to 7:21 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	12.5	12.5	12.6	12.6	12.7	12.7	12.8	12.9	12.9	13.0	13.0	13.1	13.1	13.2	13.2	13.3	13.3	13.4	13.4	13.5	13.5	13.6	13.6	13.7	13.7	13.8	13.8	13.9	13.9	14.0
Sunrise (AM)	6:15	6:13	6:11	6:09	6:07	6:05	6:03	6:01	5:59	5:57	5:56	5:54	5:52	5:50	5:48	5:46	5:45	5:43	5:41	5:39	5:37	5:36	5:34	5:32	5:31	5:29	5:27	5:26	5:24	5:22
Sunset (PM)	6:43	6:44	6:46	6:47	6:48	6:50	6:51	6:52	6:54	6:55	6:56	6:57	6:59	7:00	7:01	7:03	7:04	7:05	7:06	7:08	7:09	7:10	7:12	7:13	7:14	7:16	7:17	7:18	7:19	7:21

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.5	6:15	6:43
2	12.5	6:13	6:44
3	12.6	6:11	6:46
4	12.6	6:09	6:47
5	12.7	6:07	6:48
6	12.7	6:05	6:50
7	12.8	6:03	6:51
8	12.9	6:01	6:52
9	12.9	5:59	6:54
10	13.0	5:57	6:55
11	13.0	5:56	6:56
12	13.1	5:54	6:57
13	13.1	5:52	6:59
14	13.2	5:50	7:00
15	13.2	5:48	7:01
16	13.3	5:46	7:03
17	13.3	5:45	7:04
18	13.4	5:43	7:05
19	13.4	5:41	7:06
20	13.5	5:39	7:08
21	13.5	5:37	7:09
22	13.6	5:36	7:10
23	13.6	5:34	7:12
24	13.7	5:32	7:13
25	13.7	5:31	7:14
26	13.8	5:29	7:16
27	13.8	5:27	7:17
28	13.9	5:26	7:18
29	13.9	5:24	7:19
30	14.0	5:22	7:21

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.67 kWh/m².

For context, solar energy here swings from a low near 1.28 kWh/m² to a high of 5.62 kWh/m² in June across the year — April's 4.67 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	4.2	4.3	4.3	4.3	4.3	4.4	4.4	4.5	4.5	4.5	4.6	4.6	4.7	4.7	4.7	4.7	4.8	4.8	4.8	4.8	4.9	4.9	4.9	4.9	4.9	5.0	5.0	5.0	5.0	5.0
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.2	Bright
2	4.3	Bright
3	4.3	Bright
4	4.3	Bright
5	4.3	Bright
6	4.4	Bright
7	4.4	Bright
8	4.5	Bright
9	4.5	Bright
10	4.5	Bright
11	4.6	Bright
12	4.6	Bright
13	4.7	Bright
14	4.7	Bright
15	4.7	Bright
16	4.7	Bright
17	4.8	Bright
18	4.8	Bright
19	4.8	Bright
20	4.8	Bright
21	4.9	Bright
22	4.9	Bright
23	4.9	Bright
24	4.9	Bright
25	4.9	Bright
26	5.0	Bright
27	5.0	Bright
28	5.0	Bright
29	5.0	Bright
30	5.0	Bright

Planning a trip in April

Is April a good time to visit Saint John?

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

0.5

Sightseeing

8th-best month of the year

0.0

Beach & pool

7th-best month of the year

April is a weaker month for outdoor sightseeing in Saint John.

What to pack for Saint John in April

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

In April, Saint John sees daytime highs around 6°C and nights near 1°C. Pack a warm layer. Worth having: a heavy coat, rain gear and sun protection. About 12 days see rain.

a warm layera heavy coatrain gearsun protection

Sea temperature near Saint John in April

The nearest coast averages about 3°C 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 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 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 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

Location & terrain

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.

3 km

95 m

water 38%

16 km

234 m

trees 52%

80 km

449 m

trees 49%

treesgrasslandartificial surfacesbare terrainwaterwetland

← March Saint John year-round climate May →Best places to visit in April

April weather nearby: Saint John West 2.0 km · Quispamsis 19 km · Fredericton 89 km · Fredericton Northside 91 km · Riverview 130 km · Lutes Mountain 131 km · Moncton 134 km · Dieppe 139 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. 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).

	Avg high (°C)	Avg low (°C)
1	4	-1
2	4	-1
3	4	-1
4	4	0
5	5	0
6	5	0
7	5	0
8	5	0
9	5	0
10	5	1
11	5	1
12	6	1
13	6	1
14	6	1
15	6	1
16	6	1
17	6	2
18	7	2
19	7	2
20	7	2
21	7	2
22	7	2
23	7	2
24	7	3
25	8	3
26	8	3
27	8	3
28	8	3
29	8	3
30	8	4

	Clearer (%)	Cloudier (%)
1	34	66
2	34	66
3	33	67
4	35	65
5	34	66
6	34	66
7	35	65
8	34	66
9	35	65
10	35	65
11	35	65
12	37	63
13	37	63
14	37	63
15	37	63
16	36	64
17	36	64
18	36	64
19	36	64
20	36	64
21	36	64
22	36	64
23	34	66
24	34	66
25	35	65
26	35	65
27	34	66
28	34	66
29	34	66
30	34	66

	Rain chance (%)	Snow chance (%)
1	40	19
2	40	19
3	41	19
4	41	18
5	41	18
6	42	17
7	42	17
8	41	16
9	41	15
10	41	14
11	40	13
12	40	12
13	40	11
14	40	10
15	40	10
16	40	9
17	40	8
18	40	8
19	40	7
20	40	7
21	40	6
22	40	6
23	40	5
24	40	5
25	40	5
26	40	5
27	40	4
28	40	4
29	41	4
30	41	4

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Avg high (°C)	Avg low (°C)
1	4	-1
2	4	-1
3	4	-1
4	4	0
5	5	0
6	5	0
7	5	0
8	5	0
9	5	0
10	5	1
11	5	1
12	6	1
13	6	1
14	6	1
15	6	1
16	6	1
17	6	2
18	7	2
19	7	2
20	7	2
21	7	2
22	7	2
23	7	2
24	7	3
25	8	3
26	8	3
27	8	3
28	8	3
29	8	3
30	8	4

	Clearer (%)	Cloudier (%)
1	34	66
2	34	66
3	33	67
4	35	65
5	34	66
6	34	66
7	35	65
8	34	66
9	35	65
10	35	65
11	35	65
12	37	63
13	37	63
14	37	63
15	37	63
16	36	64
17	36	64
18	36	64
19	36	64
20	36	64
21	36	64
22	36	64
23	34	66
24	34	66
25	35	65
26	35	65
27	34	66
28	34	66
29	34	66
30	34	66

	Rain chance (%)	Snow chance (%)
1	40	19
2	40	19
3	41	19
4	41	18
5	41	18
6	42	17
7	42	17
8	41	16
9	41	15
10	41	14
11	40	13
12	40	12
13	40	11
14	40	10
15	40	10
16	40	9
17	40	8
18	40	8
19	40	7
20	40	7
21	40	6
22	40	6
23	40	5
24	40	5
25	40	5
26	40	5
27	40	4
28	40	4
29	41	4
30	41	4

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Avg high (°C)	Avg low (°C)
1	4	-1
2	4	-1
3	4	-1
4	4	0
5	5	0
6	5	0
7	5	0
8	5	0
9	5	0
10	5	1
11	5	1
12	6	1
13	6	1
14	6	1
15	6	1
16	6	1
17	6	2
18	7	2
19	7	2
20	7	2
21	7	2
22	7	2
23	7	2
24	7	3
25	8	3
26	8	3
27	8	3
28	8	3
29	8	3
30	8	4

	Clearer (%)	Cloudier (%)
1	34	66
2	34	66
3	33	67
4	35	65
5	34	66
6	34	66
7	35	65
8	34	66
9	35	65
10	35	65
11	35	65
12	37	63
13	37	63
14	37	63
15	37	63
16	36	64
17	36	64
18	36	64
19	36	64
20	36	64
21	36	64
22	36	64
23	34	66
24	34	66
25	35	65
26	35	65
27	34	66
28	34	66
29	34	66
30	34	66

	Rain chance (%)	Snow chance (%)
1	40	19
2	40	19
3	41	19
4	41	18
5	41	18
6	42	17
7	42	17
8	41	16
9	41	15
10	41	14
11	40	13
12	40	12
13	40	11
14	40	10
15	40	10
16	40	9
17	40	8
18	40	8
19	40	7
20	40	7
21	40	6
22	40	6
23	40	5
24	40	5
25	40	5
26	40	5
27	40	4
28	40	4
29	41	4
30	41	4

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100