What is climate change?
Climate change refers to a large-scale, long-term shift in the planet's weather patterns and average temperatures.
Read morePortsmouth Youth Hostel weather
Today (22 September 2019)
| Time | Now | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
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| Weather symbol |
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| Chance of precipitation | ≥95% | 70% | 10% | 10% | 10% | 10% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
| Temperature (°C) |
17°
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17°
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18°
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18°
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18°
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19°
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19°
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18°
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17°
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16°
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16°
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16°
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16°
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| Feels like temperature (°C) | 18° | 16° | 16° | 16° | 16° | 16° | 16° | 15° | 15° | 15° | 15° | 15° | 14° |
| Wind direction and speed (mph) | WNW 2 | SSW 7 | S 11 | SSW 12 | SSW 12 | SSW 13 | SSW 13 | SSW 13 | SSW 11 | SSW 11 | SSW 11 | SW 10 | SW 10 |
| Wind gust (mph) | 11 | 13 | 19 | 20 | 22 | 23 | 22 | 23 | 21 | 20 | 20 | 18 | 19 |
| Visibility | P | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG |
| Humidity | 92% | 85% | 77% | 71% | 75% | 70% | 67% | 71% | 74% | 78% | 82% | 84% | 85% |
| UV | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | - | - | - | - | - |
Monday (23 September 2019)
| Time | 00:00 | 01:00 | 02:00 | 03:00 | 04:00 | 05:00 | 06:00 | 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
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| Weather symbol |
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| Chance of precipitation | 10% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | 30% | <5% | <5% | 30% | 30% | 10% | 10% | 10% | 20% | 60% | ≥95% | ≥95% | 90% | 90% | 50% | 50% |
| Temperature (°C) |
16°
|
16°
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15°
|
15°
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15°
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15°
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14°
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14°
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15°
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16°
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17°
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17°
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18°
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18°
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18°
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18°
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18°
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17°
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17°
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16°
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16°
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17°
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17°
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17°
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| Feels like temperature (°C) | 14° | 14° | 14° | 14° | 13° | 13° | 13° | 13° | 14° | 15° | 15° | 15° | 15° | 15° | 15° | 15° | 15° | 15° | 14° | 14° | 14° | 14° | 14° | 15° |
| Wind direction and speed (mph) | SW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 11 | WSW 10 | WSW 10 | WSW 8 | WSW 8 | WSW 9 | SW 10 | SW 13 | SSW 13 | SSW 14 | SSW 14 | S 15 | S 15 | S 15 | S 15 | SSE 15 | S 16 | S 16 | S 16 | SSW 15 |
| Wind gust (mph) | 19 | 18 | 19 | 20 | 20 | 20 | 19 | 17 | 15 | 15 | 18 | 21 | 22 | 25 | 25 | 26 | 26 | 26 | 26 | 27 | 28 | 29 | 29 | 26 |
| Visibility | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | G | G | G | M | P | M | M | M | M |
| Humidity | 87% | 88% | 86% | 85% | 85% | 85% | 85% | 85% | 82% | 79% | 72% | 69% | 66% | 67% | 70% | 72% | 74% | 76% | 83% | 88% | 90% | 91% | 92% | 94% |
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 3 | 2 | 1 | 1 | 1 | - | - | - | - | - |
Tuesday (24 September 2019)
| Time | 00:00 | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | 40% | 50% | 60% | 70% | 70% | 50% | 40% | 10% | 60% |
| Temperature (°C) |
17°
|
17°
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17°
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17°
|
17°
|
18°
|
17°
|
16°
|
16°
|
| Feels like temperature (°C) | 15° | 16° | 15° | 14° | 15° | 15° | 13° | 13° | 13° |
| Wind direction and speed (mph) | SSW 14 | SSW 13 | S 15 | S 19 | SW 15 | WSW 17 | WSW 21 | WSW 18 | SW 18 |
| Wind gust (mph) | 24 | 23 | 25 | 32 | 26 | 28 | 35 | 30 | 30 |
| Visibility | G | G | M | M | G | VG | G | G | M |
| Humidity | 94% | 94% | 94% | 93% | 86% | 80% | 76% | 82% | 87% |
| UV | - | - | - | - | 1 | 3 | 1 | - | - |
Wednesday (25 September 2019)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
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| Weather symbol |
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| Chance of precipitation | 60% | 30% | 40% | 50% | 40% | 40% | <5% | 10% |
| Temperature (°C) |
16°
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16°
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16°
|
16°
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18°
|
18°
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17°
|
16°
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| Feels like temperature (°C) | 13° | 13° | 13° | 13° | 15° | 16° | 15° | 14° |
| Wind direction and speed (mph) | SW 18 | SW 18 | WSW 18 | W 19 | W 16 | W 14 | WNW 11 | W 11 |
| Wind gust (mph) | 30 | 30 | 30 | 31 | 27 | 24 | 17 | 17 |
| Visibility | G | G | G | M | G | M | VG | VG |
| Humidity | 89% | 89% | 89% | 87% | 80% | 74% | 77% | 87% |
| UV | - | - | - | 2 | 3 | 1 | - | - |
Thursday (26 September 2019)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | 20% | 20% | 50% | 50% | 50% | 20% | 60% | 60% |
| Temperature (°C) |
15°
|
15°
|
16°
|
17°
|
18°
|
18°
|
17°
|
17°
|
| Feels like temperature (°C) | 14° | 14° | 15° | 16° | 15° | 15° | 15° | 15° |
| Wind direction and speed (mph) | W 10 | WSW 9 | SSW 10 | SW 12 | SW 16 | SW 18 | SW 15 | SW 15 |
| Wind gust (mph) | 16 | 15 | 17 | 20 | 26 | 30 | 25 | 24 |
| Visibility | VG | G | G | M | M | G | G | G |
| Humidity | 93% | 95% | 93% | 90% | 90% | 87% | 90% | 91% |
| UV | - | - | - | 1 | 2 | 1 | - | - |
Friday (27 September 2019)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | 40% | 40% | 10% | 30% | 40% | 40% | 10% | <5% |
| Temperature (°C) |
17°
|
16°
|
15°
|
16°
|
17°
|
17°
|
16°
|
16°
|
| Feels like temperature (°C) | 14° | 14° | 13° | 14° | 14° | 13° | 13° | 13° |
| Wind direction and speed (mph) | SW 14 | SW 15 | WSW 13 | WSW 15 | WSW 17 | WSW 19 | WSW 16 | WSW 15 |
| Wind gust (mph) | 23 | 24 | 21 | 24 | 28 | 31 | 26 | 23 |
| Visibility | M | M | G | G | G | VG | VG | VG |
| Humidity | 91% | 92% | 92% | 84% | 78% | 76% | 82% | 84% |
| UV | - | - | - | 2 | 3 | 1 | - | - |
Saturday (28 September 2019)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | <5% | <5% | <5% | 10% | 40% | 40% | 70% | 40% |
| Temperature (°C) |
15°
|
15°
|
15°
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16°
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17°
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16°
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16°
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16°
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| Feels like temperature (°C) | 13° | 13° | 12° | 13° | 13° | 13° | 13° | 13° |
| Wind direction and speed (mph) | WSW 14 | W 14 | WSW 13 | WSW 15 | WSW 18 | WSW 18 | SW 17 | SW 16 |
| Wind gust (mph) | 23 | 21 | 20 | 24 | 30 | 29 | 27 | 26 |
| Visibility | VG | G | G | G | G | G | M | M |
| Humidity | 86% | 88% | 89% | 80% | 73% | 76% | 83% | 87% |
| UV | - | - | - | 2 | 2 | 1 | - | - |
London & South East England weather forecast
Headline:
Chance of thundery showers, but still feeling warm.
Today:
Chance of scattered thundery showers this morning but also some warm, drier, brighter interludes. From late morning, a more organised band of thundery showers moves north and east, but a mostly dry, bright evening to follow. Maximum temperature 24 °C.
Tonight:
Most places dry overnight with some clear periods. However, some patchy low cloud and fog is likely to form. Winds generally light. Minimum temperature 12 °C.
Monday:
Patchy low cloud and fog at first, soon dispersing. Dry with warm bright or sunny spells for most of the day, but rain arrives from the west from late afternoon. Maximum temperature 21 °C.
Outlook for Tuesday to Thursday:
Tuesday, overnight rain clearing then frequent showers, occasionally heavy and thundery. Breezy.Wednesday, further rain or showers. Thursday, rain and strong winds move east later. Temperatures mostly near normal.
Updated:
UK long range weather forecast
Rain and strong winds will spread eastwards across the UK on Thursday, with gales possible in the north and west. It will stay unsettled for the end of September, with a mixture of some sunny days, and cloudier days with more persistent rainfall. It is likely to be windy at times, with the potential for gales, particularly in the west and southwest. Temperatures will vary around normal, but in any drier spells, they may be warmer than average. Into the start of October, it is most likely that we will see a continuation of the changeable weather, although this is not certain yet. We could also see a return of more settled weather for the southeast, but still, in the northwest, it may remain unsettled, with wind and rain.
Updated:
Confidence in the forecast remains low through this period. However, early October may bring spells of fine and settled weather. This would bring bright days, but with the increasing risk of overnight mist, fog and some frost. Northern and western parts of the country may continue to see some rain at times, and this might spread across the rest of the country as we go through October. Temperatures are likely to be close to the average, but with settled weather, this will bring warmer days and cooler nights.
Updated:
Related advice
Flood warnings
Updated