Nepean weather in April

In April, Nepean sees average daytime highs of 12°C and overnight lows near 1°C, with 92 mm of precipitation across 11.3 wet days and about 13.2 hours of daylight. It is the 7th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 8°C in the first days to 15°C by the end. The sky is clear or mostly clear about 22% 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 Nepean's 9th-clearest and 1st-windiest month. For the whole year in context, see Nepean's year-round climate.

Daytime high
12°
7th warmest
Overnight low
6th coldest
Precipitation
92 mm
11.3 wet days
Daylight
13 h 18 min
5:25 AM – 6:41 PM
Cloud cover
70%
9th clearest
Wind
12 km/h
1st windiest
Solar energy
4.73 kWh/m²
Travel score
2.9
out of 10

Nepean is neighbourhood in Ottawa, Ontario, Canada, former municipality.

Density
829/km²
people per km²
Founded
1978

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 8°C in the first days to 15°C by the end.

A typical April day in Nepean reaches about 12°C in the afternoon and slips back to 1°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 5°C and 19°C. Set against its neighbours, April runs about 9°C warmer than March and about 8°C cooler than May.

-10°10°20°151015202530
Avg high (°C)Avg low (°C)
17-2
28-2
38-1
48-1
58-1
69-1
79-1
890
9100
10100
11100
12111
13111
14111
15121
16122
17122
18132
19132
20132
21133
22143
23143
24143
25143
26154
27154
28154
29164
30165

How April really feels in Nepean

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 23 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
23
wind chill below the day's low

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

Nepean 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 (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-5° / -14°7010.49.28.90.0
Feb-3° / -13°568.8810.10.0
Mar / -7°7210.26.511.60.1
Apr12° / 9211.32.813.22.9
May19° / 8511.30.214.65.8
Jun24° / 13°9511.3015.46.5
Jul26° / 16°9411.8015.16.3
Aug25° / 15°8610.8013.96.7
Sep21° / 10°909.9012.36.4
Oct13° / 9711.70.610.73.5
Nov / -2°8011.13.59.30.5
Dec-1° / -8°7611.48.78.60.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 11% of April, with mostly cloudy or overcast conditions the remaining 68%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13466
23466
33466
43367
53367
63367
73367
83367
93367
103367
113367
123268
133169
143268
153268
163268
173169
183169
193169
203169
213169
223169
233169
243169
253268
263268
273268
283367
293466
303466

Chance of precipitation in April

Any precipitationSnow

Nepean gets around 92 mm of rain and snow over 11.3 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 37% and peaks near 38% on the wettest days, and about 3 days bring snow.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
13714
23714
33814
43814
53814
63814
73814
83814
93713
103713
113712
123712
133711
143710
15379
16378
17378
18377
19376
20376
21375
22375
23374
24374
25373
26373
27373
28373
29362
30362

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
10991
11991
12991
13991
14991
15991
16991
17991
18991
19991
20991
21991
22991
23991
24991
25991
26982
27982
28982
29973
30973

Wind in April

Winds average 12 km/h in April, the windiest month of the year.

Across April, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3011calm

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 5:53 AM to 5:01 AM, and sunset from 6:22 PM to 6:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:536:22
212.55:516:23
312.65:496:24
412.65:476:26
512.75:466:27
612.75:446:28
712.85:426:30
812.95:406:31
912.95:386:32
1013.05:366:34
1113.05:346:35
1213.15:326:36
1313.15:306:37
1413.25:296:39
1513.25:276:40
1613.35:256:41
1713.35:236:43
1813.45:216:44
1913.45:196:45
2013.55:186:47
2113.55:166:48
2213.65:146:49
2313.65:136:50
2413.75:116:52
2513.75:096:53
2613.85:076:54
2713.85:066:56
2813.95:046:57
2913.95:036:58
3014.05:016:59

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.73 kWh/m².

For context, solar energy here swings from a low near 1.21 kWh/m² to a high of 5.99 kWh/m² in June across the year — April's 4.73 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.4Bright
54.4Bright
64.5Bright
74.5Bright
84.5Bright
94.6Bright
104.6Bright
114.6Bright
124.7Bright
134.7Bright
144.7Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
235.0Bright
245.0Bright
255.0Bright
265.1Bright
275.1Bright
285.1Bright
295.2Bright
305.2Bright
Planning a trip in April

Is April a good time to visit Nepean?

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

2.9
Sightseeing
7th-best month of the year
0.1
Beach & pool
7th-best month of the year

April is a weaker month for outdoor sightseeing in Nepean.

What to pack for Nepean in April

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

In April, Nepean sees daytime highs around 12°C and nights near 1°C. Pack a warm layer. Worth having: rain gear and sun protection. About 11 days see rain.

a warm layerrain gearsun protection

UV index in Nepean in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks 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 Nepean peaks around July 13 at about 8 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 13UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr4Moderate
May6High
Jun7High
Jul8Very high
Aug5Moderate
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Nepean 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 Nepean is worst in June — around 15 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodJun 2015 µg/m³Dec 107 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb11Good
Mar13Moderate
Apr11Good
May13Moderate
Jun15Moderate
Jul14Moderate
Aug13Moderate
Sep10Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Nepean?

Nepean sits at 45.3°N, 75.7°W, 87 m above sea level, in Canada. The nearest listed city is Ottawa South, 7.0 km away.

Topography around Nepean

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Nepean.

Within 3 km, the terrain around Nepean has only modest variations in elevation — a maximum elevation change of 43 m around an average of 92 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 173 m; within 80 km, significant variations in elevation — a maximum elevation change of 519 m.

The land around Nepean is covered by artificial surfaces (38%) and trees (36%) within 3 km, trees (35%) and artificial surfaces (23%) within 16 km, and trees (62%) and cropland (21%) within 80 km.

3 km
43 m
16 km
173 m
80 km
519 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
April weather nearby: Ottawa South 7.0 km · Gloucester 7.0 km · Alta Vista 8.0 km · Ottawa 9.0 km · Centretown 9.0 km · Aylmer 10 km · Hull 10 km · Bridlewood 12 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
Christian 53%none 35%Muslim 5%Hindu 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 Nepean (45.3362°, -75.7225°, elevation 87 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. 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).