Best year time to visit Cornwall Island

General weather information about Cornwall Island

Average annual temperature is 8.7 °C

Absolute maximum temperature: 33.2 °C

Absolute minimum temperature: -29.3 °C

Number of sunny days: 121 days

Number of rainy days: 201 days

Number of snow days: 43 days

Look at detailed online map of Cornwall Island

* Weather data for Cornwall Island Canada is based on climate observations for 2026 year

Cornwall Island air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	4.6	11.7	7.5	25.3	31.1	33.2	32.9	27.6	31.7	29.3	16.7	8.8
Average daytime temperature (°C)	-0.3	0.5	3.1	13.3	19.4	24.0	27.2	23.8	22.5	16.4	6.3	2.7
Average temperature (°C)	-3.1	-5.1	-0.9	7.0	12.8	18.2	22.3	19.4	17.9	12.5	2.3	-0.4
Average night temperature (°C)	-5.5	-9.5	-4.4	2.1	6.7	13.4	18.4	16.0	14.2	9.5	-0.6	-2.8
Absolute minimum temperature (°C)	-12.6	-29.3	-9.5	-7.9	0.8	7.9	13.5	11.4	10.2	-0.6	-5.9	-9.7

Cornwall Island monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	9.0	11.0	12.0	14.0	15.0	15.0	15.0	14.0	13.0	11.0	10.0	9.0
Daylight mean duration (h)	9.2	10.4	11.9	13.5	14.9	15.6	15.2	14.0	12.5	11.0	9.6	8.8
Daylight minimum duration (h)	8.0	9.0	11.0	12.0	14.0	15.0	14.0	13.0	11.0	10.0	9.0	8.0
Sunshine mean duration (h)	2.6	5.2	5.9	7.9	11.1	9.7	11.2	9.7	9.5	5.5	5.1	2.3
Precipitation (mm)	116	76	74	90	75	104	130	176	52	125	52	128
Sunny days	5	7	10	14	21	9	3	5	21	8	8	10
Rainy days	11	13	13	16	10	21	28	26	9	23	15	16
Snow days	15	8	8	0	0	0	0	0	0	0	7	5

Cornwall Island - weather forecast by months

Cornwall Island weather in january Cornwall Island weather in february Cornwall Island weather in march Cornwall Island weather in april Cornwall Island weather in may Cornwall Island weather in june Cornwall Island weather in july Cornwall Island weather in august Cornwall Island weather in september Cornwall Island weather in october Cornwall Island weather in november Cornwall Island weather in december

Best time to visit Cornwall Island:

The best time to visit Cornwall Island during the most sunny months:

May — 11.1(h)
June — 9.7(h)
July — 11.2(h)
August — 9.7(h)
September — 9.5(h)

Months with the longest average daylight duration in Cornwall Island:

June — 15.6(h)

The largest precipitation sum in Cornwall Island is at

July — 130(mm)

August — 176(mm)

December — 128(mm)

Weather forecast in the closest to Cornwall Island admin centers