Climate averages 1991–2020

Swansea weather
in November.

A cool, wet month: the 8th warmest and the joint 10th driest of the year.

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

Average high 10.5°C Daytime mean, November

Average low 6.9°C Night-time mean, November

Rainfall 143 mm 17 days with ≥1 mm

Daylight 9 h Sunrise to sunset, per day

November is a cool month in Swansea: daytime highs average 10.5°C and nights cool to about 6.9°C. By daytime temperature it is the 8th warmest of the 12 months.

Expect about 143 mm of rain on roughly 17 days, which makes November a wet month (the joint 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 55 min on an average November day.

The nearest other city in this atlas is Cardiff (55 km away). In November its highs average 10.3°C, about as warm as Swansea, with 102 mm of rain.

Among the 143 cities listed in the United Kingdom, Swansea ranks joint 14th of 143 for the warmest November highs and 143rd of 143 for the driest November (rainfall, lowest first). The mean November high of those 143 cities is 9.7°C; Swansea is 0.8°C warmer than that mean.

From November to December, average highs fall by 2.3°C to 8.2°C, and monthly rainfall rises from 143 mm to 145 mm.

The annual picture

November 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

Swansea climate table

1991–2020

Monthly climate averages for Swansea, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	7.7°C4.0°C	4.0°C	128	17.0	8.48 h
February	7.8°C3.7°C	3.7°C	92	13.1	9.910 h
March	9.4°C4.5°C	4.5°C	83	13.7	11.812 h
April	11.8°C6.1°C	6.1°C	69	12.0	13.814 h
May	14.6°C8.8°C	8.8°C	72	12.4	15.616 h
June	16.9°C11.6°C	11.6°C	79	12.2	16.617 h
July	18.5°C13.5°C	13.5°C	86	13.8	16.216 h
August	18.5°C13.8°C	13.8°C	101	14.3	14.615 h
September	16.8°C12.1°C	12.1°C	96	13.2	12.713 h
October	13.7°C9.7°C	9.7°C	143	16.7	10.711 h
November, selected	10.5°C6.9°C	6.9°C	143	17.3	8.99 h
December	8.2°C4.7°C	4.7°C	145	16.8	7.98 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

November in nearby cities

Distance from Swansea

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