AI-generatedGreater Sudbury at a glance
- Best time
- May – Sep
- Warmest month
- Jul · 24°
- Sunshine a year
- 2,000 h
- Rain a year
- 874 mm
- Climate
- Continental
- Time zone
- UTC−5 / UTC−4
- Elevation
- 266 m
Climate in Greater Sudbury
Greater Sudbury has warm to hot summers and cold winters with occasional snow. July is the warmest month with average highs of 24 °C, while January is the coolest at −7 °C. With around 2,000 hours of sunshine a year, Greater Sudbury is moderately sunny; July is the sunniest month with 8.2 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Poor
Best time to visit: May – September
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 5°
- Midday, 13:00: about 11°
- Afternoon, 16:00: about 11°
- Evening, 20:00: about 8°
- Night, 23:00: about 7°
07:4018:39
Cold evenings: bring a warm jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:21–08:21 · evening 17:58–18:58
- Blue hour
- Morning 07:09–07:21 · evening 18:58–19:10
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Greater Sudbury in October?
In October, Greater Sudbury is cool: daytime highs average 11 °C, and nights cool down to about 4 °C. The sun is scarce, with only about 4 hours a day. Rain is frequent, with about 13 rainy days and 95 mm in total. All in all, October is not an ideal month for a holiday in Greater Sudbury.
More details for October
- Daylight
- 11 h 0 min07:40 – 18:39
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 68 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 1 day1 cm or more of fresh snowAll months
- Time zone
- UTC−4America/Toronto
How the score comes together
- Temperatureweight 50 %33 %
- Sunshineweight 20 %15 %
- Few rainy daysweight 30 %39 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Sunshine hours in Greater Sudbury
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 3.9 of 11.0 hours of daylight in Greater Sudbury, 35 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Greater Sudbury
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 3 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 9).
Minutes until sunburn in October
- Very fair skin
- about 50 min
- Fair skin
- about 60 min
- Light brown skin
- about 85 min
- Olive skin
- about 105 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Greater Sudbury: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Greater Sudbury has about 13 rainy days with 95 mm of rain in total.
Wind and clouds in Greater Sudbury
How breezy and how cloudy Greater Sudbury is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Greater Sudbury typically peaks at 18 km/h during the day: Beaufort 3, light breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 68 % of the sky over Greater Sudbury: mostly cloudy, with about 3.9 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Greater Sudbury
How often the day gets hot in Greater Sudbury (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Greater Sudbury has about 0 hot days, with an average daytime high of 11 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Snow in Greater Sudbury
When Greater Sudbury is likely to be white: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, Greater Sudbury has about 1 days with at least 1 cm of fresh snow, 3 cm in total. The chance of seeing snow during a week's stay is 11 out of 100: hardly any.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Greater Sudbury
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Frost below 0°
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
ColdOctober: nights around 4°. The room should be heated.
The coolest nights are in January (−16°), the warmest in July (15°). Nights are pleasant for sleeping (15 to 20 °C) from July to August. Nights fall below 8 °C on average from October to May, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 18 | −7° | −16° | 3.3 h | 10 | 52 |
| FebruaryFeb | 25 | −5° | −15° | 4.5 h | 9 | 46 |
| MarchMar | 30 | 1° | −9° | 5.7 h | 8 | 55 |
| AprilApr | 30 | 8° | −2° | 6.6 h | 10 | 75 |
| MayMay | 76 | 17° | 6° | 7.5 h | 10 | 69 |
| JuneJun | 81 | 22° | 12° | 7.8 h | 11 | 87 |
| JulyJul | 83 | 24° | 15° | 8.2 h | 11 | 87 |
| AugustAug | 78 | 23° | 15° | 7.0 h | 11 | 89 |
| SeptemberSep | 75 | 19° | 11° | 5.8 h | 11 | 87 |
| OctoberOct | 31 | 11° | 4° | 3.9 h | 13 | 95 |
| NovemberNov | 15 | 4° | −3° | 2.7 h | 11 | 69 |
| DecemberDec | 13 | −3° | −11° | 2.7 h | 12 | 63 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
46.49° N, 80.99° W · 266 m · America/Toronto
Best time to visit Greater Sudbury
The best time to visit Greater Sudbury is from May to September. For sightseeing, day trips and hiking, conditions are most comfortable from May to September. The wettest month is October with 95 mm of precipitation.
Greater Sudbury through the seasons
How the weather changes over the seasons, with averages for each.
Greater Sudbury in spring
Mar – May
Fair
- 1–17 °C by day
- 7 h of sun a day
- 29 rainy days in all
Greater Sudbury in summer
Jun – Aug
Excellent
- 22–24 °C by day
- 8 h of sun a day
- 33 rainy days in all
Greater Sudbury in autumn
Sep – Nov
Fair
- 4–19 °C by day
- 4 h of sun a day
- 34 rainy days in all
Greater Sudbury in winter
Dec – Feb
Poor
- -7–-3 °C by day
- 4 h of sun a day
- 30 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Greater Sudbury for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Compare two months in Greater Sudbury
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
July has the better holiday weather in Greater Sudbury: score 83 against 31. In July, days are 13 °C warmer than in October. July has 2 fewer rainy days. The sun shines 4 hours longer a day in July.
| Month | October | July |
|---|---|---|
| Weather score | 31 | 83better |
| Day high | 11° | 24° |
| Night low | 4° | 15° |
| Sunshine | 3.9 h | 8.2 hbetter |
| Rainy days | 13 | 11better |
| Rainfall | 95 mm | 87 mm |
| Muggy days | 0better | 3 |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
May – Sep
15–28 °C and not too much rain
Rainy months
Oct
12 or more rainy days
Snow
Nov – Apr
Snow on 2 or more days
Greater Sudbury month by month
The typical weather for every month at a glance.
18January-7° · 3 h
In January, Greater Sudbury is freezing cold: daytime highs average −7 °C, and nights often drop below freezing (−16 °C). The sun is scarce, with only about 3 hours a day. Precipitation, often as snow, falls on about 10 days, totalling 52 mm. Snow falls on about 8 days. All in all, January is not an ideal month for a holiday in Greater Sudbury.
Greater Sudbury in January25February-5° · 5 h
In February, Greater Sudbury is freezing cold: daytime highs average −5 °C, and nights often drop below freezing (−15 °C). Expect around 5 hours of sunshine a day. Precipitation, often as snow, falls on about 9 days, totalling 46 mm. Snow falls on about 7 days. All in all, February is not an ideal month for a holiday in Greater Sudbury.
Greater Sudbury in February30March1° · 6 h
In March, Greater Sudbury is freezing cold: daytime highs average 1 °C, and nights often drop below freezing (−9 °C). Expect around 6 hours of sunshine a day. Precipitation, often as snow, falls on about 8 days, totalling 55 mm. Snow falls on about 6 days. All in all, March is not an ideal month for a holiday in Greater Sudbury.
Greater Sudbury in March30April8° · 7 h
In April, Greater Sudbury is cold: daytime highs average 8 °C, and nights often drop below freezing (−2 °C). The sun shines for around 7 hours a day. Rain is frequent, with about 10 rainy days and 75 mm in total. Snow falls on about 3 days. All in all, April is not an ideal month for a holiday in Greater Sudbury.
Greater Sudbury in April76May17° · 8 h
In May, Greater Sudbury is mild: daytime highs average 17 °C, and nights cool down to about 6 °C. The sun shines for around 8 hours a day. Rain is frequent, with about 10 rainy days and 69 mm in total. All in all, May is a good month for a holiday in Greater Sudbury.
Greater Sudbury in May81June22° · 8 h
In June, Greater Sudbury is warm: daytime highs average 22 °C, and nights cool down to about 12 °C. The sun shines for around 8 hours a day. Rain is frequent, with about 11 rainy days and 87 mm in total. All in all, June is an excellent month for a holiday in Greater Sudbury.
Greater Sudbury in June83July24° · 8 h
In July, Greater Sudbury is warm: daytime highs average 24 °C, and nights cool down to about 15 °C. The sun shines for around 8 hours a day. Rain is frequent, with about 11 rainy days and 87 mm in total. All in all, July is an excellent month for a holiday in Greater Sudbury.
Greater Sudbury in July78August23° · 7 h
In August, Greater Sudbury is warm: daytime highs average 23 °C, and nights cool down to about 15 °C. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 89 mm in total. All in all, August is a good month for a holiday in Greater Sudbury.
Greater Sudbury in August75September19° · 6 h
In September, Greater Sudbury is mild: daytime highs average 19 °C, and nights cool down to about 11 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 87 mm in total. All in all, September is a good month for a holiday in Greater Sudbury.
Greater Sudbury in September31October11° · 4 h
In October, Greater Sudbury is cool: daytime highs average 11 °C, and nights cool down to about 4 °C. The sun is scarce, with only about 4 hours a day. Rain is frequent, with about 13 rainy days and 95 mm in total. All in all, October is not an ideal month for a holiday in Greater Sudbury.
Greater Sudbury in October15November4° · 3 h
In November, Greater Sudbury is cold: daytime highs average 4 °C, and nights often drop below freezing (−3 °C). The sun is scarce, with only about 3 hours a day. Precipitation, often as snow, falls on about 11 days, totalling 69 mm. Snow falls on about 5 days. All in all, November is not an ideal month for a holiday in Greater Sudbury.
Greater Sudbury in November13December-3° · 3 h
In December, Greater Sudbury is freezing cold: daytime highs average −3 °C, and nights often drop below freezing (−11 °C). The sun is scarce, with only about 3 hours a day. Precipitation, often as snow, falls on about 12 days, totalling 63 mm. Snow falls on about 8 days. All in all, December is not an ideal month for a holiday in Greater Sudbury.
Greater Sudbury in DecemberGreater Sudbury compared
Put Greater Sudbury side by side with another destination.
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Greater Sudbury vs. Huntsville (Muskoka)
In October the holiday weather in Greater Sudbury and Huntsville (Muskoka) is about equally good (score 31 vs. 32). During the day Huntsville (Muskoka) is 1 °C warmer than Greater Sudbury.
| in October | Greater Sudbury | Huntsville (Muskoka) |
|---|---|---|
| Holiday score | 31 | 32 |
| Daytime high | 11° | 12° |
| Sunshine | 4 h | 4 h |
| Rainy days | 13 | 14 |
| Best time | May – Sep | May – Sep |
Through the year
Canada in October: the best places
In October, Greater Sudbury ranks 20 among the 31 nearest destinations in this country.
- Hamilton15°53
- 2Toronto14°52
- 3Niagara-on-the-Lake15°51
- 4Niagara Falls15°51
- 5London15°50
- 6Halifax14°14°49
- 7Collingwood (Blue Mountains)13°47
- 8Ottawa13°44
- 20Greater SudburyThis page11°31
Planning a trip to Greater Sudbury
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Greater Sudbury in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Greater Sudbury has its best school-holiday weather during the summer holidays (score 80) and its weakest during the Christmas holidays (score 16).
- 30
Easter holidays
Mar – Apr
Poor
- 6 °C by day
- 6.3 h of sun a day
- 10 rainy days a month
Keep in mind: Snow
- 77
May half-term
May – Jun
Good
- 18 °C by day
- 7.6 h of sun a day
- 11 rainy days a month
Good for: Sightseeing & walks
- 80
Summer holidays
Jul – Aug
ExcellentBest holidays
- 24 °C by day
- 7.4 h of sun a day
- 11 rainy days a month
Good for: Sightseeing & walks
- 31
October half-term
Oct
Poor
- 11 °C by day
- 3.9 h of sun a day
- 13 rainy days a month
Keep in mind: Frequent rain
- 16
Christmas holidays
Dec – Jan
Poor
- −5 °C by day
- 3.0 h of sun a day
- 11 rainy days a month
Keep in mind: Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 7 h 15 min
- Distance
- 5,600 km
- Time zone
- UTC−4
- Jet lag
- About 3 days (5 h west)
Rule of thumb for flying west: for a few days before, stay up a little later, and get afternoon and evening light at your destination.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Greater Sudbury
When is the best time to visit Greater Sudbury?
The best time to visit Greater Sudbury is from May to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Greater Sudbury?
July is the warmest month, with average highs of 24 °C and nights around 15 °C. January is the coolest month at −7 °C.
When does it rain most in Greater Sudbury?
The wettest month is October with 95 mm of precipitation. The driest month is February with 46 mm.
How many hours of sunshine does Greater Sudbury get?
Greater Sudbury gets around 2,000 hours of sunshine a year. The sunniest month is July with 8.2 hours a day; in November there are 2.7 hours a day.
What time zone is Greater Sudbury in?
Greater Sudbury uses the time zone America/Toronto: UTC−5 in January and UTC−4 in July.
How long is the flight from London to Greater Sudbury?
A nonstop flight from London to Greater Sudbury takes about 7 h 15 min, for a straight-line distance of about 5,600 km.
Which school holidays are best for Greater Sudbury?
Greater Sudbury has its best school-holiday weather during the summer holidays (score 80) and its weakest during the Christmas holidays (score 16). Holiday ratings (0–100): Easter holidays 30, May half-term 77, Summer holidays 80, October half-term 31, Christmas holidays 16.
Near Greater Sudbury
Other destinations close by.
Places with a climate like Greater Sudbury
Destinations whose weather through the year is closest to Greater Sudbury's – good alternatives.