Portsmouth weather forecasts, local conditions and travel warnings. Get accurate weather updates for Hampshire's south coast city.
Portsmouth weather today
Current conditions, the next 24 hours, the week ahead, wind on the Solent, tide times for Portsmouth Harbour and any Environment Agency flood alerts, refreshed every 30 minutes.
18°COvercast
Feels like 18°C. Today 16° to 19°. Wind SW 8 mph, gusting 15 mph (force 3, gentle breeze). Humidity 84%, pressure 1020 mb. Sunrise 08:27, sunset 19:12, UV max 1.
No Environment Agency flood alerts or warnings are in force within 15 km of Portsmouth.
Next 24 hours
| Time | Weather | Temp | Rain chance | Rain | Wind | Gusts |
|---|---|---|---|---|---|---|
| Thu 18:00 | Overcast | 19° | 34% | 0 mm | SW 9 | 17 |
| Thu 19:00 | Overcast | 18° | 14% | 0 mm | SW 8 | 15 |
| Thu 20:00 | Partly cloudy | 18° | 0% | 0 mm | SW 7 | 13 |
| Thu 21:00 | Partly cloudy | 17° | 0% | 0 mm | SSW 7 | 14 |
| Thu 22:00 | Overcast | 18° | 0% | 0 mm | SSW 8 | 15 |
| Thu 23:00 | Overcast | 18° | 2% | 0 mm | SW 9 | 17 |
| Fri 00:00 | Overcast | 17° | 0% | 0 mm | SW 7 | 13 |
| Fri 01:00 | Overcast | 17° | 0% | 0 mm | SW 6 | 12 |
| Fri 02:00 | Mainly clear | 16° | 0% | 0 mm | WSW 7 | 13 |
| Fri 03:00 | Clear | 16° | 13% | 0 mm | SW 6 | 13 |
| Fri 04:00 | Overcast | 17° | 31% | 0 mm | SW 7 | 15 |
| Fri 05:00 | Overcast | 17° | 49% | 0 mm | SW 7 | 15 |
| Fri 06:00 | Overcast | 17° | 68% | 0 mm | SW 8 | 16 |
| Fri 07:00 | Overcast | 17° | 87% | 0 mm | SW 9 | 18 |
| Fri 08:00 | Rain | 13° | 96% | 2.5 mm | NNW 14 | 27 |
| Fri 09:00 | Drizzle | 12° | 89% | 0.7 mm | NNW 12 | 24 |
| Fri 10:00 | Drizzle | 11° | 73% | 0.5 mm | NNW 11 | 23 |
| Fri 11:00 | Overcast | 12° | 55% | 0 mm | NNW 10 | 20 |
| Fri 12:00 | Mainly clear | 13° | 37% | 0 mm | NNW 9 | 19 |
| Fri 13:00 | Partly cloudy | 14° | 18% | 0 mm | NNW 10 | 21 |
| Fri 14:00 | Mainly clear | 15° | 4% | 0 mm | NNW 11 | 23 |
| Fri 15:00 | Partly cloudy | 16° | 0% | 0 mm | NNW 10 | 21 |
| Fri 16:00 | Mainly clear | 16° | 0% | 0 mm | NNW 10 | 20 |
| Fri 17:00 | Mainly clear | 15° | 0% | 0 mm | NNW 10 | 20 |
Seven-day forecast
| Day | Weather | High | Low | Rain | Chance | Wind max | Sunrise | Sunset |
|---|---|---|---|---|---|---|---|---|
| Thu 15 Oct | Light drizzle | 19° | 16° | 0.1 mm | 45% | SW 11 | 08:27 | 19:12 |
| Fri 16 Oct | Rain | 17° | 10° | 3.7 mm | 96% | NW 14 | 08:28 | 19:10 |
| Sat 17 Oct | Mainly clear | 14° | 7° | 0 mm | 0% | N 12 | 08:30 | 19:08 |
| Sun 18 Oct | Overcast | 13° | 7° | 0 mm | 21% | N 16 | 08:32 | 19:05 |
| Mon 19 Oct | Light drizzle | 14° | 7° | 0.3 mm | 49% | NNE 11 | 08:33 | 19:03 |
| Tue 20 Oct | Overcast | 18° | 12° | 0 mm | 25% | ENE 9 | 08:35 | 19:01 |
| Wed 21 Oct | Overcast | 15° | 10° | 0 mm | 26% | ENE 7 | 08:37 | 18:59 |
Sea conditions
Solent off Southsea: sea temperature 17.6°C, waves 0.56 m from the SSW, period 4 s.
Air quality and pollen
Air quality Good (European AQI 19). PM2.5 4.2, PM10 8, NO₂ 9.7, ozone 57 µg/m³. Pollen: grass low, birch low.
This month so far
October so far in Portsmouth (14 days): 12.8 mm of rain on 4 wet days, average high 18.4°C. Warmest day 21°C on 4 Oct, coldest night 7°C on 8 Oct.