Weather in James Bay in September

General weather information about James Bay

Average annual temperature is 10.7 °C

Absolute maximum temperature: 28.7 °C

Absolute minimum temperature: -4.5 °C

Number of sunny days: 187 days

Number of rainy days: 178 days

Look at detailed online map of James Bay

* Weather data for James Bay Canada is based on climate observations for 2026 year

James Bay air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)11.29.013.519.728.024.228.328.725.620.715.611.2
Average daytime temperature (°C)7.56.48.810.818.919.824.424.719.514.39.38.7
Average temperature (°C)5.54.15.47.514.214.918.319.215.010.76.66.7
Average night temperature (°C)3.72.42.74.810.511.213.114.811.48.14.45.0
Absolute minimum temperature (°C)-2.1-4.5-1.5-0.37.38.59.611.45.51.0-1.1-0.1

James Bay monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.010.012.014.015.016.016.015.013.011.09.08.0
Daylight mean duration (h)8.810.211.913.715.216.015.614.312.610.89.28.4
Daylight minimum duration (h)8.09.011.012.014.015.015.013.011.09.08.08.0
Sunshine mean duration (h)3.14.47.77.412.512.913.812.19.56.44.72.5
Precipitation (mm)10511256971215111135103150175
Sunny days77115262627251718135
Rainy days24212025544613131726
Snow days000000000000

James Bay - weather forecast by months

James Bay weather in januaryJames Bay weather in februaryJames Bay weather in marchJames Bay weather in aprilJames Bay weather in mayJames Bay weather in juneJames Bay weather in julyJames Bay weather in augustJames Bay weather in septemberJames Bay weather in octoberJames Bay weather in novemberJames Bay weather in december

Best time to visit James Bay:

The best time to visit James Bay during the most sunny months:

  • May — 12.5(h)
  • June — 12.9(h)
  • July — 13.8(h)
  • August — 12.1(h)

Months with the longest average daylight duration in James Bay:

  • June — 16.0(h)
  • July — 15.6(h)

The largest precipitation sum in James Bay is at

  • January — 105(mm)
  • February — 112(mm)
  • April — 97(mm)
  • October — 103(mm)
  • November — 150(mm)
  • December — 175(mm)

    • Weather forecast in the closest to James Bay admin centers

    Weather forecast in the closest towns to James Bay

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    Frequently asked questions

    When is the best time to visit James Bay?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit James Bay.
    What is the weather like in James Bay?
    See average temperature, rainfall and daylight hours for James Bay by month in the table above.
    How many sunny days does James Bay have?
    The monthly weather statistics above show sunshine and rainfall patterns for James Bay throughout the year.