easeweather.com
Gatineau
AbbotsfordAjaxAuroraBanffBarrieBoisbriandBouchervilleBramptonBrandonBrantfordBrossardBurlingtonBurnabyCalgaryCambridgeCharlottetownChathamChilliwackCoquitlamCornwallDartmouthDeltaDorvalEdmontonFort McMurrayFredericton
Gatineau
GranbyGrande PrairieGreater SudburyGuelphHalifaxHamiltonKamloopsKanataKelownaKingstonKitchenerLangleyLavalLethbridgeLindsayLondonMarkhamMiltonMissionMississaugaMonctonMont-RoyalMontréalMoose JawNanaimoNepeanNew GlasgowNewmarketNiagara FallsNorfolk CountyNorth BattlefordNorth BayOakvilleOkanaganOrilliaOshawaOttawaPentictonPeterboroughPickeringPointe-ClairePrince AlbertPrince EdwardPrince GeorgeQuébecRed DeerReginaRichmond HillSaguenaySaint JohnSarniaSaskatoonSault Ste. MarieSherbrookeSt. CatharinesSt. John'sSurreySydneyThunder BayTimminsTorontoVancouverVaughanVictoriaWasaga BeachWaterlooWellandWest VancouverWhistlerWhitehorseWindsorWinnipegWoodstockYellowknife More Locations
Canada weather

Weather in Gatineau for September 2026

Your guide to Gatineau weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Gatineau has been nearly identical to the historical average, with a temperature of 23.3 °C (showing only a slight deviation of 0.3 °C).

  • Expect cooler weather in the next days in Gatineau with the forecast suggesting a temperature of 18.4 °C, lower than the historical average.

  • In general, the average temperature in Gatineau at the beginning of September is 24.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21 °C by the end of September.

    • Rain 🌧️

  • Gatineau experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 76.5 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/11°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
72 %
Avg humidity

Gatineau Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
23°
2
Overcast
24°
3
Sunny
26°
4
Sunny
26°
5
Mist
25°
6
Overcast
24°
7
Thundery outbreaks possible
22°
8
Light rain
18°
9
Cloudy
22°
10
Sunny
23°
11
Sunny
20°
12
Sunny
23°
13
Overcast
25°
14
Overcast
19°
15
Light rain shower
25°
16
Partly cloudy
20°
17
Sunny
17°
18
Sunny
12°
19
Sunny
11°
20
Sunny
11°
21
Overcast
19°
22
Overcast
15°
23
Light rain shower
17°
24
Overcast
22°
25
Heavy rain
18°
26
Sunny
21°
27
Cloudy
20°
28
Partly cloudy
22°
29
Mist
23°
30
Partly cloudy
21°

Temperatures trend during September in Gatineau

See the weather trend as well as the moving average line

September weather in Gatineau day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Overcast
Overcast
 23° /12° 56.2 mm 5
2 Sept. Overcast
Overcast
 24° /13° 3.3 mm 5
3 Sept. Sunny
Sunny
 26° /13° 12.7 mm 7
4 Sept. Sunny
Sunny
 26° /13° 1.4 mm 6
5 Sept. Mist
Mist
 25° /12° 0.1 mm 6
6 Sept. Overcast
Overcast
 24° /13° 0.1 mm 6
7 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 22° /11° 3.8 mm 5
8 Sept. Light rain
Light rain
 18° /11° 12.6 mm 4
9 Sept. Cloudy
Cloudy
 22° /9° 4.6 mm 4
10 Sept. Sunny
Sunny
 23° /10° 0 mm 5.9
11 Sept. Sunny
Sunny
 20° /6° 0 mm 5.4
12 Sept. Sunny
Sunny
 23° /10° 0 mm 5.6
13 Sept. Overcast
Overcast
 25° /13° 0.4 mm 2.7
14 Sept. Overcast
Overcast
 19° /8° 0.1 mm 5
15 Sept. Light rain shower
Light rain shower
 25° /8° 9.5 mm 5
16 Sept. Partly cloudy
Partly cloudy
 20° /12° 0.6 mm 5
17 Sept. Sunny
Sunny
 17° /8° 0 mm 5
18 Sept. Sunny
Sunny
 12° /4° 0 mm 4
19 Sept. Sunny
Sunny
 11° /2° 1.8 mm 4
20 Sept. Sunny
Sunny
 11° /1° 0 mm 4
21 Sept. Overcast
Overcast
 19° /4° 0 mm 5
22 Sept. Overcast
Overcast
 15° /10° 1.6 mm 3
23 Sept. Light rain shower
Light rain shower
 17° /14° 14.8 mm 4
24 Sept. Overcast
Overcast
 22° /13° 0 mm 5
25 Sept. Heavy rain
Heavy rain
 18° /11° 61.1 mm 4
26 Sept. Sunny
Sunny
 21° /11° 1.3 mm 5
27 Sept. Cloudy
Cloudy
 20° /9° 0 mm 4
28 Sept. Partly cloudy
Partly cloudy
 22° /10° 0 mm 5
29 Sept. Mist
Mist
 23° /10° 0 mm 5
30 Sept. Partly cloudy
Partly cloudy
 21° /11° 0 mm 5
Next
Important Notice
Our weather forecast for Gatineau in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Gatineau forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
›

Gatineau in September - FAQ

What are the expected maximum and minimum temperatures in Gatineau during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Gatineau during September?
Moderate rainfall is anticipated in Gatineau during September, with a total of 76.5 mm spread over approximately 7 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Gatineau during September?
The average wind speed in Gatineau during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Gatineau

Explore the daily rainfall trends and prepare for Gatineaus September weather 💧
Typically, Gatineau has 7 rainy days in September with a total of 76.5 mm of rainfall.

UV exposure in Gatineau during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

Quick links

More Gatineau weather pages
You are here
Location coordinates Where is Gatineau?

Get accurate weather forecasts for Gatineau, located at latitude 45.477 and longitude -75.702. Stay updated with localized weather information tailored for Gatineau.

Related locations
Select a location for accurate weather forecast
CalgaryOttawa
More Locations
Found a mistake?
We appreciate your attention to details. Tell us here.