Weather in Saint John in August

General weather information about Saint John

Average annual temperature is 21.7 °C

Absolute maximum temperature: 41.5 °C

Absolute minimum temperature: -0.5 °C

Number of sunny days: 155 days

Number of rainy days: 210 days

Look at detailed online map of Saint John

* Weather data for Saint John United States is based on climate observations for 2026 year

Saint John air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	25.3	27.4	28.2	28.6	32.6	36.9	39.0	41.5	37.0	33.2	28.3	25.6
Average daytime temperature (°C)	19.6	20.7	23.3	24.7	29.5	33.4	35.3	37.6	34.2	27.1	21.3	18.2
Average temperature (°C)	14.6	15.4	18.3	19.8	24.2	28.0	29.8	31.7	28.2	21.6	15.9	12.9
Average night temperature (°C)	10.6	11.7	14.4	15.9	19.5	23.6	25.3	26.9	23.2	17.2	12.0	8.8
Absolute minimum temperature (°C)	0.7	2.0	-0.5	8.9	13.7	19.9	23.0	22.5	19.8	8.7	4.1	1.2

Saint John monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	10.0	11.0	12.0	13.0	13.0	14.0	14.0	13.0	12.0	11.0	10.0	10.0
Daylight mean duration (h)	10.4	11.1	12.0	12.9	13.7	14.1	13.9	13.2	12.3	11.4	10.6	10.2
Daylight minimum duration (h)	10.0	10.0	11.0	12.0	13.0	13.0	13.0	12.0	11.0	11.0	10.0	10.0
Sunshine mean duration (h)	6.7	7.9	9.1	9.1	10.9	11.5	11.9	12.0	10.9	9.0	6.7	7.6
Precipitation (mm)	160	82	64	101	93	57	67	24	41	25	73	174
Sunny days	11	8	10	9	9	5	12	20	12	22	16	21
Rainy days	20	20	21	21	22	25	19	11	18	9	14	10
Snow days	0	0	0	0	0	0	0	0	0	0	0	0

Saint John - weather forecast by months

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

Best time to visit Saint John:

The best time to visit Saint John during the most sunny months:

July — 11.9(h)
August — 12.0(h)

The largest precipitation sum in Saint John is at

January — 160(mm)

April — 101(mm)

December — 174(mm)

Weather forecast in the closest to Saint John admin centers