Weather tomorrow: Portsmouth
Forecast for tomorrow, 28 September: cloudy. The daily air temperature range is 10 to 23 °C. Chance of precipitation tomorrow according to the daily forecast: 6%. Forecast precipitation amount: 0 mm. Wind from the north at 2.5 m/s.
monday 28 september
Cloudy
+23°
+10°
Sunset 19:20
G/m activity 2
Precipitation probability 6%
Precipitation 0.0 mm
Wind
2.5 m/s
Pressure 995.9 hPa
Index UV 6
Humidity 69%
Sunrise 07:26
Moon Waning Gibbous
Sunrise 07:26
Sunset 19:20
G/m activity 2
Moon Waning Gibbous
00:00
12°
NW
1.4 m/s01:00
12°
NW
1.4 m/s02:00
12°
NW
1.4 m/s03:00
11°
NW
1.4 m/s04:00
11°
NW
1.4 m/s05:00
11°
W
1.4 m/s06:00
10°
NW
1.4 m/s07:00
10°
NW
1.4 m/s08:00
11°
NW
1.4 m/s09:00
13°
NW
1.4 m/s10:00
16°
NW
1.7 m/s11:00
18°
N
1.7 m/s12:00
20°
N
1.9 m/s13:00
22°
N
1.9 m/s14:00
23°
N
1.9 m/s15:00
23°
N
2.2 m/s16:00
24°
N
2.2 m/s17:00
23°
N
2.5 m/s18:00
22°
N
2.2 m/s19:00
19°
NE
1.9 m/s20:00
17°
NE
1.7 m/s21:00
15°
NE
1.4 m/s22:00
14°
E
1.1 m/s23:00
14°
SE
0.6 m/sWhat is the atmospheric pressure in Portsmouth tomorrow?
Pressure adjusted for location elevation. Location elevation: 164 m relative to sea level
Forecast for 28.09.2026 · Local time
Pressure: 994.6–997.3 hPa.
Minimum: 994.6 hPa00:00–04:00
Maximum: 997.3 hPa08:00–13:00Also at other hours
Largest change over 3 hours:
+1.3 hPa · 02:00–05:00
First of 12 intervals with the same change magnitude shown.
hPa · Change over the previous 3 hours
Colours show pressure relative to this day’s range
Lower · 994.6 Scale midpoint · 995.9 Higher · 997.3 Largest change over 3 hoursWhat is the chance of precipitation in Portsmouth tomorrow?
Chance of precipitation tomorrow according to the daily forecast: 6%.
Precipitation for tomorrow
| 00:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 11% |
|---|---|---|
| 01:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 11% |
| 02:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 11% |
| 03:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 11% |
| 04:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 11% |
| 05:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 11% |
| 06:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 12% |
| 07:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 12% |
| 08:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 12% |
| 09:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 7% |
| 10:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 5% |
| 11:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 3% |
| 12:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 2% |
| 13:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 1% |
| 14:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 1% |
| 15:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 1% |
| 16:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 1% |
| 17:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 1% |
| 18:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 2% |
| 19:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 5% |
| 20:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 8% |
| 21:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 10% |
| 22:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 13% |
| 23:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 15% |
Portsmouth weather tomorrow: morning, afternoon and evening
Morning: clear, +10 °C. Afternoon: clear, +20 °C. Evening: clear, +22 °C.
According to the hourly forecast, tomorrow's highest temperature is expected at 16:00, at around +24 °C. Times are local.
Tomorrow's strongest winds are expected at 17:00 (from the north). The lightest winds are expected at 23:00 (from the southeast). Times are local.
Temperature and wind for tomorrow
What geomagnetic activity is forecast for Portsmouth tomorrow?
The highest forecast Kp index for tomorrow is 2.
