Climate averages 1991–2020
Southampton weather
in October.
A cool, moderately wet month: the 6th warmest and one of the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a cool month in Southampton: daytime highs average 14.5°C and nights cool to about 9.6°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 75 mm of rain on roughly 12 days, which makes October a moderately wet month (one of the wettest months of the year). Daylight, from sunrise to sunset, lasts about 10 h 45 min on an average October day.
The nearest other city in this atlas is Portsmouth (25 km away). In October its highs average 14.7°C, about as warm as Southampton, with 96 mm of rain.
Among the 143 cities listed in the United Kingdom, Southampton ranks joint 16th of 143 for the warmest October highs and joint 97th of 143 for the driest October (rainfall, lowest first). The mean October high of those 143 cities is 13.6°C; Southampton is 0.9°C warmer than that mean.
From October to November, average highs fall by 3.7°C to 10.8°C, and monthly rainfall stays at 75 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Southampton climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.8°C3.5°C | 3.5°C | 67 | 11.5 | 8.58 h |
| February | 8.0°C3.2°C | 3.2°C | 51 | 10.2 | 10.010 h |
| March | 10.2°C4.3°C | 4.3°C | 48 | 10.1 | 11.812 h |
| April | 12.8°C5.9°C | 5.9°C | 56 | 11.1 | 13.814 h |
| May | 15.9°C8.8°C | 8.8°C | 57 | 10.0 | 15.515 h |
| June | 18.6°C11.7°C | 11.7°C | 54 | 10.0 | 16.416 h |
| July | 20.7°C13.8°C | 13.8°C | 53 | 10.0 | 16.016 h |
| August | 20.4°C13.9°C | 13.9°C | 65 | 10.4 | 14.615 h |
| September | 18.1°C12.0°C | 12.0°C | 54 | 9.3 | 12.713 h |
| October, selected | 14.5°C9.6°C | 9.6°C | 75 | 11.6 | 10.811 h |
| November | 10.8°C6.4°C | 6.4°C | 75 | 11.7 | 9.09 h |
| December | 8.3°C4.2°C | 4.2°C | 71 | 11.4 | 8.08 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
October in nearby cities
- Portsmouth in OctoberUnited Kingdom · 25 kmHigh 14.7°C · Low 9.7°C · 96 mm rain
- Bournemouth in OctoberUnited Kingdom · 39 kmHigh 14.5°C · Low 10.6°C · 82 mm rain
- Basingstoke in OctoberUnited Kingdom · 46 kmHigh 14.1°C · Low 8.2°C · 66 mm rain
- Poole in OctoberUnited Kingdom · 46 kmHigh 14.6°C · Low 10.6°C · 82 mm rain
- Reading in OctoberUnited Kingdom · 68 kmHigh 14.3°C · Low 8.3°C · 62 mm rain
- Guildford in OctoberUnited Kingdom · 69 kmHigh 14.6°C · Low 8.4°C · 62 mm rain
- Bracknell in OctoberUnited Kingdom · 73 kmHigh 14.1°C · Low 8.0°C · 61 mm rain
- Worthing in OctoberUnited Kingdom · 73 kmHigh 14.6°C · Low 10.3°C · 105 mm rain
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 limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Southampton) is explained once on the Southampton year overview and on the Sources, method and limits page.