Climate averages 1991–2020

Douglas weather
in August.

A mild, moderately wet month: the warmest and the 7th driest of the year.

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

Average high 16.0°C Daytime mean, August

Average low 14.0°C Night-time mean, August

Rainfall 78 mm 13 days with ≥1 mm

Daylight 15 h Sunrise to sunset, per day

August is a mild month in Douglas: daytime highs average 16.0°C and nights cool to about 14.0°C. By daytime temperature it is the warmest month of the year.

Expect about 78 mm of rain on roughly 13 days, which makes August a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 53 min on an average August day.

The nearest other city in this atlas is Blackpool (101 km away). In August its highs average 17.7°C, 1.7°C warmer than Douglas, with 117 mm of rain.

From August to September, average highs fall by 0.9°C to 15.1°C, and monthly rainfall rises from 78 mm to 85 mm.

The annual picture

August in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

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

Every month, side by side

Douglas climate table

1991–2020

Monthly climate averages for Douglas, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	8.1°C5.8°C	5.8°C	97	16.5	8.08 h
February	7.6°C5.4°C	5.4°C	76	14.3	9.710 h
March	8.1°C5.8°C	5.8°C	70	12.9	11.812 h
April	9.4°C7.1°C	7.1°C	59	11.7	14.014 h
May	11.7°C9.3°C	9.3°C	56	11.2	16.016 h
June	13.8°C11.7°C	11.7°C	64	10.7	17.117 h
July	15.5°C13.5°C	13.5°C	67	12.2	16.617 h
August, selected	16.0°C14.0°C	14.0°C	78	12.9	14.915 h
September	15.1°C13.1°C	13.1°C	85	13.3	12.813 h
October	13.1°C11.0°C	11.0°C	117	16.1	10.611 h
November	10.6°C8.5°C	8.5°C	125	18.5	8.69 h
December	8.9°C6.6°C	6.6°C	114	18.2	7.57 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 Douglas

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 Douglas) is explained once on the Douglas year overview and on the Sources, method and limits page.