Greater Sudbury weather in March

In March, Greater Sudbury sees average daytime highs of 1°C and overnight lows near -10°C, with 50 mm of precipitation across 7.8 wet days and about 11.6 hours of daylight. It is the 9th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about -2°C in the first days to 5°C by the end. The sky is clear or mostly clear about 26% of the time in March, and the air most often feels dry.

Daylight stretches from about 10 h 48 min at the start of March to 12 h 24 min by month's end. Set against the rest of the year, March is Greater Sudbury's 5th-clearest and 4th-windiest month. For the whole year in context, see Greater Sudbury's year-round climate.

Daytime high
9th warmest
Overnight low
-10°
4th coldest
Precipitation
50 mm
7.8 wet days
Daylight
11 h 36 min
6:46 AM – 6:21 PM
Cloud cover
65%
5th clearest
Wind
12 km/h
4th windiest
Solar energy
3.98 kWh/m²
Travel score
0.0
out of 10

Greater Sudbury is city and unitary authority in Ontario, Canada.

Density
52/km²
people per km²
Founded
1893

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

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about -2°C in the first days to 5°C by the end.

A typical March day in Greater Sudbury reaches about 1°C in the afternoon and slips back to -10°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between -6°C and 9°C. Set against its neighbours, March runs about 6°C warmer than February and about 8°C cooler than April.

-20°-10°10°151015202531
Avg high (°C)Avg low (°C)
1-3-14
2-2-13
3-2-13
4-2-13
5-2-13
6-1-13
7-1-12
8-1-12
9-1-12
100-12
110-11
120-11
130-11
141-10
151-10
161-10
172-10
182-9
192-9
203-9
213-8
223-8
233-8
244-7
254-7
264-7
275-6
285-6
295-6
305-5
315-5

How March really feels in Greater Sudbury

Once humidity and wind are folded in, March averages 0 days that feel above 32°C and 31 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
31
31 feel bitter (≤ -10°C)

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

Greater Sudbury weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-7° / -17°5310.110.98.80.0
Feb-5° / -16°417.67.9100.0
Mar / -10°507.86.111.60.0
Apr10° / -1°709.83.913.32.1
May17° / 7210.60.414.85.4
Jun23° / 11°8110.8015.56.5
Jul25° / 14°8710.7015.26.8
Aug23° / 13°9011.20146.7
Sep19° / 9211012.45.7
Oct11° / 9412.70.910.72.3
Nov / -5°73116.39.20.1
Dec-4° / -12°59119.98.50.0

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 12% of March, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23466
33664
43664
53664
63664
73664
83763
93763
103763
113763
123862
133862
143862
153862
163961
173961
184060
194060
204060
214159
224060
234060
243961
253961
263862
273862
283763
293664
303664
313664

Chance of precipitation in March

Any precipitationSnow

Greater Sudbury gets around 50 mm of rain and snow over 7.8 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 26% and peaks near 30% on the wettest days, and about 6 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
13028
23027
33027
43026
53026
62925
72925
82925
92824
102823
112723
122722
132622
142621
152521
162520
172419
182319
192318
202317
212217
222216
232316
242316
252416
262416
272517
282617
292717
302817
312917

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in March

Winds average 12 km/h in March.

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

051015151015202531
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
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 10 h 48 min at the start of March to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 96 minutes over March. Sunrise moves from 7:15 AM to 6:16 AM, and sunset from 6:00 PM to 6:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.87:156:00
210.87:136:01
310.97:116:03
410.97:096:04
511.07:076:06
611.07:056:07
711.17:036:09
811.17:026:10
911.27:006:11
1011.36:586:13
1111.36:566:14
1211.46:546:16
1311.46:526:17
1411.56:506:18
1511.56:486:20
1611.66:466:21
1711.66:446:23
1811.76:426:24
1911.86:406:26
2011.86:386:27
2111.96:366:28
2211.96:346:30
2312.06:326:31
2412.06:306:32
2512.16:286:34
2612.26:266:35
2712.26:246:37
2812.36:226:38
2912.36:206:39
3012.46:186:41
3112.46:166:42

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 3.98 kWh/m².

For context, solar energy here swings from a low near 1.18 kWh/m² to a high of 6.11 kWh/m² in June across the year — March's 3.98 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
13.2Moderate
23.3Moderate
33.3Moderate
43.4Moderate
53.4Moderate
63.5Moderate
73.5Moderate
83.6Moderate
93.6Moderate
103.7Moderate
113.8Moderate
123.8Moderate
133.9Moderate
143.9Moderate
154.0Moderate
164.0Bright
174.1Bright
184.1Bright
194.2Bright
204.2Bright
214.2Bright
224.3Bright
234.3Bright
244.3Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in March

Is March a good time to visit Greater Sudbury?

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

0.0
Sightseeing
9th-best month of the year
0.0
Beach & pool
8th-best month of the year

March is a weaker month for outdoor sightseeing in Greater Sudbury.

What to pack for Greater Sudbury in March

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

In March, Greater Sudbury sees daytime highs around 1°C and nights near -10°C. Pack a warm layer and a heavy coat. About 8 days see rain.

a warm layera heavy coat

Sea temperature near Greater Sudbury in March

The nearest coast averages about 1°C in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 69 km away) is warmest in August at about 19°C and coldest in March near 1°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan2Bracing
Feb1Bracing
Mar1Bracing
Apr2Bracing
May5Bracing
Jun11Bracing
Jul18Cool
Aug19Cool
Sep17Cool
Oct12Bracing
Nov8Bracing
Dec4Bracing

UV index in Greater Sudbury in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Greater Sudbury peaks around June 20 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 highHighModerateLowJun 20UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5Moderate
May6High
Jun8Very high
Jul7Very high
Aug6High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Greater Sudbury?

Greater Sudbury sits at 46.5°N, 81.0°W, 266 m above sea level, in Canada. The nearest listed city is Valley East, 17 km away.

Topography around Greater Sudbury

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

Within 3 km, the terrain around Greater Sudbury has only modest variations in elevation — a maximum elevation change of 91 m around an average of 274 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 219 m; within 80 km, significant variations in elevation — a maximum elevation change of 411 m.

The land around Greater Sudbury is covered by trees (43%) and artificial surfaces (33%) within 3 km, trees (65%) within 16 km, and trees (82%) within 80 km.

3 km
91 m
16 km
219 m
80 km
411 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
March weather nearby: Valley East 17 km · North Bay 118 km · Huntsville 188 km · Bracebridge 208 km · Midland 212 km · Owen Sound 214 km · Timmins 221 km · Collingwood 231 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 Greater Sudbury (46.49°, -80.99°, elevation 266 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).