Best year time to visit Sarnia

General weather information about Sarnia

Average annual temperature is 10.0 °C

Absolute maximum temperature: 32.2 °C

Absolute minimum temperature: -17.7 °C

Number of sunny days: 156 days

Number of rainy days: 189 days

Number of snow days: 20 days

Look at detailed online map of Sarnia

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

Sarnia air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	11.1	13.8	14.3	26.5	30.0	30.0	31.5	29.5	32.2	27.0	14.8	14.4
Average daytime temperature (°C)	3.3	5.2	5.3	14.6	18.2	22.4	25.8	23.9	22.1	15.8	8.3	6.5
Average temperature (°C)	0.3	-0.6	1.3	9.1	12.4	17.8	21.4	19.6	18.1	12.3	4.3	3.6
Average night temperature (°C)	-2.1	-4.4	-1.5	4.3	7.7	13.7	17.8	16.2	14.7	9.4	1.0	1.4
Absolute minimum temperature (°C)	-16.0	-17.7	-5.9	-2.8	1.8	9.7	14.5	11.2	9.3	-2.0	-6.8	-4.1

Sarnia 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)	9.4	10.5	11.9	13.4	14.7	15.3	15.0	13.9	12.5	11.0	9.8	9.1
Daylight minimum duration (h)	9.0	9.0	11.0	12.0	14.0	15.0	14.0	13.0	11.0	10.0	9.0	9.0
Sunshine mean duration (h)	3.0	6.7	6.3	8.2	11.3	11.9	11.4	10.4	9.1	5.5	6.0	3.5
Precipitation (mm)	66	80	100	106	39	71	121	121	55	96	37	68
Sunny days	6	15	10	12	24	17	4	14	13	10	18	13
Rainy days	18	10	14	18	7	13	27	17	17	21	10	17
Snow days	7	3	7	0	0	0	0	0	0	0	2	1

Sarnia - weather forecast by months

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

Best time to visit Sarnia:

The best time to visit Sarnia during the most sunny months:

May — 11.3(h)
June — 11.9(h)
July — 11.4(h)
August — 10.4(h)

Months with the longest average daylight duration in Sarnia:

June — 15.3(h)

The largest precipitation sum in Sarnia is at

April — 106(mm)

July — 121(mm)

August — 121(mm)

Weather forecast in the closest to Sarnia admin centers