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Weather forecast in Portsmouth, United Kingdom

Portsmouth, current weather: partly cloudy, no precipitation is expected for the next 2 hours. Air temperature +16°, feels like +14°. Wind speed 4.1 Meters per second, north-easterly. Pressure 764 millimeters of mercury. Humidity 89%. Daytime water temperature +18°. Sunrise 06:47, Sunset 19:07. This time yesterday +18°

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Portsmouth, United Kingdom: Hourly forecast.

  • 10 pm: +16°, partly cloudy, Feels like +14°.

  • 11 pm: +15°, partly cloudy, Feels like +13°.

  • Saturday, 12 am: +15°, partly cloudy, Feels like +13°.

  • 1 am: +15°, overcast, Feels like +13°. Probability of precipitation 10%

  • 2 am: +16°, partly cloudy, Feels like +14°. Probability of precipitation 10%

  • 3 am: +16°, mostly clear, Feels like +14°. Probability of precipitation 10%

  • 4 am: +16°, mostly clear, Feels like +15°. Probability of precipitation 10%

  • 5 am: +16°, partly cloudy, Feels like +15°. Probability of precipitation 10%

  • 6 am: +16°, light rain, Feels like +15°. Probability of precipitation 20%

  • Sunrise 21 September 06:49 am

  • 7 am: +15°, partly cloudy, Feels like +13°. Probability of precipitation 10%

  • 8 am: +16°, partly cloudy, Feels like +14°. Probability of precipitation 10%

  • 9 am: +17°, partly cloudy, Feels like +15°. Probability of precipitation 10%

  • 10 am: +18°, mostly clear, Feels like +16°. Probability of precipitation 10%

  • 11 am: +19°, mostly clear, Feels like +17°. Probability of precipitation 10%

  • 12 pm: +19°, mostly clear, Feels like +17°. Probability of precipitation 10%

  • 1 pm: +20°, clear, Feels like +18°. Probability of precipitation 10%

  • 2 pm: +20°, mostly clear, Feels like +19°. Probability of precipitation 10%

  • 3 pm: +20°, overcast, Feels like +18°. Probability of precipitation 10%

  • 4 pm: +20°, overcast, Feels like +19°. Probability of precipitation 10%

  • 5 pm: +20°, overcast, Feels like +19°. Probability of precipitation 10%

  • 6 pm: +20°, overcast, Feels like +19°. Probability of precipitation 10%

  • 7 pm: +19°, overcast, Feels like +18°. Probability of precipitation 10%

  • Sunset 21 September 07:05 pm

  • 8 pm: +18°, overcast, Feels like +17°. Probability of precipitation 10%

  • 9 pm: +18°, light rain, Feels like +17°. Probability of precipitation 10%

  • 10 pm: +18°, light rain, Feels like +17°. Probability of precipitation 20%

  • 11 pm: +18°, rain, Feels like +17°. Probability of precipitation 20%

Air quality forecast

Moderate

Air quality is acceptable. Enjoy your usual outdoor activities.

  • AQI — 72
  • AQI — 72
  • AQI — 71
  • AQI — 60
  • AQI — 55
  • AQI — 47
  • AQI — 44
  • AQI — 52

Weather forecast for Today, 20 September: in the morning air temperature +17°, feels like +13°, overcast, wind speed 6.8 meters per second, north-easterly, humidity 82%, pressure 765 millimeters of mercury; in the afternoon +20°, feels like +17°, heavy rain, wind speed 6.4 meters per second, easterly, humidity 68%, pressure 764 millimeters of mercury; in the evening +18°, feels like +16°, partly cloudy, wind speed 4 meters per second, north-easterly, humidity 75%, pressure 763 millimeters of mercury; in the night +16°, feels like +14°, partly cloudy, wind speed 4 meters per second, north-easterly, humidity 86%, pressure 763 millimeters of mercury; uv index: 2, low; magnetic field: quiet; daytime water temperature +18°; sunrise 06:47; sunset 19:07; daylight hours: 12 hr 20 min

Weather forecast for Tomorrow, 21 September: in the morning air temperature +17°, feels like +15°, light rain, wind speed 5 meters per second, easterly, humidity 86%, pressure 762 millimeters of mercury; in the afternoon +20°, feels like +18°, partly cloudy, wind speed 5 meters per second, easterly, humidity 73%, pressure 761 millimeters of mercury; in the evening +19°, feels like +18°, light rain, wind speed 3.5 meters per second, easterly, humidity 77%, pressure 760 millimeters of mercury; in the night +17°, feels like +15°, rain, wind speed 4.8 meters per second, easterly, humidity 86%, pressure 759 millimeters of mercury; uv index: 3, moderate; magnetic field: quiet; daytime water temperature +18°; sunrise 06:49; sunset 19:05; daylight hours: 12 hr 16 min

Weather forecast for Sunday, 22 September: in the morning air temperature +17°, feels like +14°, light rain, wind speed 6.3 meters per second, easterly, humidity 91%, pressure 757 millimeters of mercury; in the afternoon +18°, feels like +16°, overcast, wind speed 5.5 meters per second, southerly, humidity 86%, pressure 756 millimeters of mercury; in the evening +17°, feels like +16°, overcast, wind speed 3.2 meters per second, south-westerly, humidity 89%, pressure 755 millimeters of mercury; in the night +15°, feels like +14°, light rain, wind speed 3.5 meters per second, south-westerly, humidity 91%, pressure 754 millimeters of mercury; uv index: 2, low; magnetic field: quiet; daytime water temperature +18°; sunrise 06:50; sunset 19:03; daylight hours: 12 hr 13 min

Weather forecast for Monday, 23 September: in the morning air temperature +16°, feels like +14°, light rain, wind speed 4.8 meters per second, south-westerly, humidity 85%, pressure 753 millimeters of mercury; in the afternoon +18°, feels like +16°, light rain, wind speed 4.9 meters per second, south-westerly, humidity 76%, pressure 752 millimeters of mercury; in the evening +16°, feels like +15°, light rain, wind speed 3.5 meters per second, south-westerly, humidity 83%, pressure 751 millimeters of mercury; in the night +14°, feels like +12°, light rain, wind speed 3.7 meters per second, westerly, humidity 91%, pressure 752 millimeters of mercury; uv index: 3, moderate; daytime water temperature +18°; sunrise 06:52; sunset 19:01; daylight hours: 12 hr 9 min

Weather forecast for Tuesday, 24 September: in the morning air temperature +14°, feels like +12°, light rain, wind speed 3.5 meters per second, westerly, humidity 86%, pressure 754 millimeters of mercury; in the afternoon +17°, feels like +14°, light rain, wind speed 5.5 meters per second, south-westerly, humidity 71%, pressure 754 millimeters of mercury; in the evening +16°, feels like +13°, overcast, wind speed 6 meters per second, south-westerly, humidity 83%, pressure 752 millimeters of mercury; in the night +14°, feels like +9°, rain, wind speed 7.5 meters per second, south-westerly, humidity 88%, pressure 750 millimeters of mercury; uv index: 3, moderate; daytime water temperature +18°; sunrise 06:53; sunset 18:58; daylight hours: 12 hr 5 min

Weather forecast for Wednesday, 25 September: in the morning air temperature +14°, feels like +8°, rain, wind speed 9.3 meters per second, south-westerly, humidity 82%, pressure 745 millimeters of mercury; in the afternoon +17°, feels like +9°, rain, wind speed 12.3 meters per second, south-westerly, humidity 77%, pressure 743 millimeters of mercury; in the evening +15°, feels like +7°, light rain, wind speed 11.5 meters per second, south-westerly, humidity 80%, pressure 741 millimeters of mercury; in the night +13°, feels like +5°, rain, wind speed 10.8 meters per second, south-westerly, humidity 83%, pressure 741 millimeters of mercury; daytime water temperature +18°; sunrise 06:55; sunset 18:56; daylight hours: 12 hr 1 min

Weather forecast for Thursday, 26 September: in the morning air temperature +13°, feels like +5°, rain, wind speed 10.8 meters per second, westerly, humidity 80%, pressure 743 millimeters of mercury; in the afternoon +15°, feels like +7°, light rain, wind speed 11.5 meters per second, westerly, humidity 69%, pressure 745 millimeters of mercury; in the evening +14°, feels like +7°, light rain, wind speed 10.5 meters per second, westerly, humidity 75%, pressure 746 millimeters of mercury; in the night +12°, feels like +4°, rain, wind speed 10.6 meters per second, westerly, humidity 82%, pressure 747 millimeters of mercury; daytime water temperature +18°; sunrise 06:56; sunset 18:54; daylight hours: 11 hr 58 min

Weather forecast for Friday, 27 September: in the morning air temperature +12°, feels like +6°, light rain, wind speed 8.6 meters per second, westerly, humidity 77%, pressure 751 millimeters of mercury; in the afternoon +15°, feels like +8°, light rain, wind speed 8.8 meters per second, westerly, humidity 56%, pressure 756 millimeters of mercury; in the evening +13°, feels like +8°, mostly clear, wind speed 5.8 meters per second, westerly, humidity 64%, pressure 758 millimeters of mercury; in the night +10°, feels like +6°, mostly clear, wind speed 5 meters per second, westerly, humidity 78%, pressure 760 millimeters of mercury; daytime water temperature +17°; sunrise 06:58; sunset 18:52; daylight hours: 11 hr 54 min

Weather forecast for Saturday, 28 September: in the morning air temperature +12°, feels like +9°, light rain, wind speed 4.5 meters per second, westerly, humidity 81%, pressure 762 millimeters of mercury; in the afternoon +15°, feels like +10°, light rain, wind speed 6.9 meters per second, south-westerly, humidity 67%, pressure 763 millimeters of mercury; in the evening +13°, feels like +9°, light rain, wind speed 5.1 meters per second, westerly, humidity 72%, pressure 762 millimeters of mercury; in the night +11°, feels like +7°, rain, wind speed 4.6 meters per second, westerly, humidity 84%, pressure 763 millimeters of mercury; daytime water temperature +17°; sunrise 07:00; sunset 18:49; daylight hours: 11 hr 49 min

Weather forecast for Sunday, 29 September: in the morning air temperature +12°, feels like +8°, overcast, wind speed 5 meters per second, westerly, humidity 85%, pressure 763 millimeters of mercury; in the afternoon +15°, feels like +11°, light rain, wind speed 5.8 meters per second, westerly, humidity 73%, pressure 763 millimeters of mercury; in the evening +14°, feels like +11°, light rain, wind speed 4.6 meters per second, westerly, humidity 74%, pressure 764 millimeters of mercury; in the night +12°, feels like +7°, partly cloudy, wind speed 6 meters per second, south-easterly, humidity 80%, pressure 764 millimeters of mercury; daytime water temperature +16°; sunrise 07:01; sunset 18:47; daylight hours: 11 hr 46 min

Weather forecast Portsmouth, United Kingdom for the next month

Get the weather forecast for the next 30 days, including september and october. There's a separate page where you can view the daytime and nighttime air temperature, precipitation, the number of sunny days, air pressure, and humidity.

View the monthly weather forecast

Weather in Portsmouth — FAQ

What is the weather today in Portsmouth?

The weather in Portsmouth today: heavy rain, with an air temperature of +18°.

What will the weather in Portsmouth be like tomorrow?

The weather in Portsmouth tomorrow: light rain, with an air temperature of +18°.

What is the usual weather in Portsmouth in September?

In September, the weather in Portsmouth is usually clear, with an average air temperature of +17°.

What is the air pollution level in Portsmouth right now?

The air pollution level in Portsmouth is currently low, measuring 74.

What is the coldest month in Portsmouth?

The coldest month in Portsmouth is February, with an average air temperature of +7°.

What is the hottest month in Portsmouth?

The hottest month in Portsmouth is August, with an average air temperature of +19°.

Discover Portsmouth's weather update: +16° now, reaching a high of +21° and a low of +15°. Prepare for the day ahead with our reliable forecast, ensuring you're ready for any temperature changes. Whether you're indoors or outdoors, stay in the know about Portsmouth's weather conditions.

Weather forecast for tomorrow: light rain · +15⁠…⁠+20⁠° · light winds at 4⁠–⁠5 m⁠/⁠s with gusts up to 9 m⁠/⁠s. Weather forecast for the weekend: light rain · winds at 6 m⁠/⁠s with gusts up to 11 m⁠/⁠s · +18⁠…⁠+20⁠°. Weather forecast for today: +15⁠…⁠+16⁠° · partly cloudy, no precipitation · light winds at 3⁠–⁠4 m⁠/⁠s with gusts up to 9 m⁠/⁠s

Weather forecast for Today, 20 September: in the morning air temperature +17°, feels like +13°, overcast, wind speed 6.8 meters per second, north-easterly, humidity 82%, pressure 765 millimeters of mercury; in the afternoon +20°, feels like +17°, heavy rain, wind speed 6.4 meters per second, easterly, humidity 68%, pressure 764 millimeters of mercury; in the evening +18°, feels like +16°, partly cloudy, wind speed 4 meters per second, north-easterly, humidity 75%, pressure 763 millimeters of mercury; in the night +16°, feels like +14°, partly cloudy, wind speed 4 meters per second, north-easterly, humidity 86%, pressure 763 millimeters of mercury; uv index: 2, low; magnetic field: quiet; daytime water temperature +18°; sunrise 06:47; sunset 19:07; daylight hours: 12 hr 20 min

Weather forecast for Tomorrow, 21 September: in the morning air temperature +17°, feels like +15°, light rain, wind speed 5 meters per second, easterly, humidity 86%, pressure 762 millimeters of mercury; in the afternoon +20°, feels like +18°, partly cloudy, wind speed 5 meters per second, easterly, humidity 73%, pressure 761 millimeters of mercury; in the evening +19°, feels like +18°, light rain, wind speed 3.5 meters per second, easterly, humidity 77%, pressure 760 millimeters of mercury; in the night +17°, feels like +15°, rain, wind speed 4.8 meters per second, easterly, humidity 86%, pressure 759 millimeters of mercury; uv index: 3, moderate; magnetic field: quiet; daytime water temperature +18°; sunrise 06:49; sunset 19:05; daylight hours: 12 hr 16 min