Climate averages 1991–2020

Langley weather
in August.

A warm, moderately wet month: the warmest and the 2nd driest of the year. Meets the pleasant-weather rule

Long-term climate patterns, not a forecast for a particular trip.

Average high 23.5°C Daytime mean, August
Average low 13.6°C Night-time mean, August
Rainfall 49 mm 6 days with ≥1 mm
Daylight 14 h Sunrise to sunset, per day
Every month in Langley · average highYear overview

August is a warm month in Langley: daytime highs average 23.5°C and nights cool to about 13.6°C. By daytime temperature it is the warmest month of the year.

Expect about 49 mm of rain on roughly 6 days, which makes August a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 24 min on an average August day.

The nearest other city in this atlas is Surrey (12 km away). In August its highs average 23.0°C, about as warm as Langley, with 49 mm of rain.

Among the 86 cities listed in Canada, Langley ranks joint 56th of 86 for the warmest August highs and joint 8th of 86 for the driest August (rainfall, lowest first). The mean August high of those 86 cities is 23.8°C; Langley is 0.3°C cooler than that mean.

From August to September, average highs fall by 3.4°C to 20.1°C, and monthly rainfall rises from 49 mm to 86 mm.

The annual picture

August in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. -5051015202530 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 3000

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Langley climate table

1991–2020
Monthly climate averages for Langley, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 5.6°C-0.2°C-0.2°C22618.68.79 h
February 7.5°C0.1°C0.1°C13914.910.110 h
March 9.9°C1.6°C1.6°C17918.111.912 h
April 13.1°C3.9°C3.9°C12914.713.714 h
May 17.2°C7.5°C7.5°C8510.815.315 h
June 19.4°C10.6°C10.6°C609.216.116 h
July 23.2°C13.4°C13.4°C335.115.816 h
August, selected 23.5°C13.6°C13.6°C495.714.414 h
September 20.1°C10.9°C10.9°C868.912.713 h
October 13.8°C6.8°C6.8°C17415.310.811 h
November 8.3°C2.7°C2.7°C25218.89.29 h
December 5.1°C0.0°C0.0°C21218.28.38 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

August in nearby cities

Distance from Langley

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Langley) is explained once on the Langley year overview and on the Sources, method and limits page.

Surrey lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.