Portsmouth, United Kingdom Climate

Weather: 11.99°C/53.58°F, Wind SW at 3.13 km/h, 58% Humidity, 0% Chance of rain

United Kingdom
(Photo by Collins Lesulie on Unsplash)
Contents

Portsmouth Climate Summary

Located at an elevation of 4.48 meters (14.7 feet) above sea level, Portsmouth has a Marine west coast, warm summer climate (Classification: Cfb). The city’s yearly temperature is 11.99ºC (53.58ºF) and it is 1.24% higher than United Kingdom’s averages. Portsmouth typically receives about 81.04 millimeters (3.19 inches) of precipitation and has 148.63 rainy days (40.72% of the time) annually.

CountryUnited Kingdom
Longitude-1.0879769
Latitude50.8197675
Attitude/Elevation4.48m (14.7ft)
Local timeTuesday 15:39
Annual high temperature13.5ºC (56.3ºF)
Annual low temperature9.07ºC (48.33ºF)
Average annual precip.81.04mm (3.19in)
Warmest monthJuly (19.55ºC / 67.19ºF)
Coldest MonthFebruary (4.49ºC / 40.08ºF)
Wettest MonthOctober (117.18mm / 4.61in)
Driest MonthApril (57.67mm / 2.27in)
Number of days with rainfall (≥ 1.0 mm)148.63 days (40.72%)
Days with no rain216.37 days (59.28%)
Humidity81.38%

Climate Portsmouth: Monthly Averages

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)13.0(55.4)14.0(57.2)18.0(64.4)20.0(68.0)22.0(71.6)24.0(75.2)27.0(80.6)27.0(80.6)25.0(77.0)22.0(71.6)18.0(64.4)14.0(57.2)27.0(80.6)
Average high °C (°F)7.94(46.29)7.89(46.2)9.76(49.57)12.19(53.94)14.55(58.19)17.27(63.09)19.55(67.19)19.41(66.94)17.98(64.36)14.99(58.98)11.29(52.32)9.13(48.43)13.5(56.3)
Daily mean °C (°F)6.67(44.01)6.57(43.83)8.06(46.51)10.36(50.65)12.97(55.35)15.76(60.37)17.89(64.2)17.82(64.08)16.21(61.18)13.5(56.3)10.1(50.18)8.01(46.42)11.99(53.58)
Average low °C (°F)4.66(40.39)4.49(40.08)5.29(41.52)6.77(44.19)9.19(48.54)11.9(53.42)14.04(57.27)14.44(57.99)13.16(55.69)11.07(51.93)7.97(46.35)5.89(42.6)9.07(48.33)
Record low °C (°F)-3.0(26.6)-3.0(26.6)-3.0(26.6)-1.0(30.2)3.0(37.4)5.0(41.0)7.0(44.6)0.0(0)7.0(44.6)2.0(35.6)-1.0(30.2)-3.0(26.6)-3.0(26.6)
Average precipitation mm (inches)97.75(3.85)83.24(3.28)59.35(2.34)57.67(2.27)62.4(2.46)71.73(2.82)64.1(2.52)79.71(3.14)66.55(2.62)117.18(4.61)111.98(4.41)100.86(3.97)81.04(3.19)
Average precipitation days (≥ 1.0 mm)13.9112.1810.279.8211.2711.4513.012.7310.1814.2715.7313.8212.39
Average relative humidity (%)83.8982.5881.6880.0180.6981.6979.9379.6878.8480.9682.8583.8181.38
Mean monthly sunshine hours5.936.189.0512.3112.8613.2113.2412.811.086.76.085.659.59

Climate Graph

The chart below shows the mean monthly temperature and precipitation of Portsmouth in recent years.

Portsmouth

Portsmouth Temperature by Month

July
17.89°C | 64.2°F
August
17.82°C | 64.08°F
September
16.21°C | 61.18°F
June
15.76°C | 60.37°F
October
13.5°C | 56.3°F
May
12.97°C | 55.35°F
April
10.36°C | 50.65°F
November
10.1°C | 50.18°F
March
8.06°C | 46.51°F
December
8.01°C | 46.42°F
January
6.67°C | 44.01°F
February
6.57°C | 43.83°F

Historical Data

Summary
  • 2010
  • 2011
  • 2012
  • 2013
  • 2014
  • 2015
  • 2016
  • 2017
  • 2018
  • 2019
  • 2020
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
TemperatureMaxAverageMin
Max Temperature12.0°C (53.6°F)8.94°C (48.09°F)7.0°C (44.6°F)
Avg Temperature11.0°C (51.8°F)7.58°C (45.64°F)5.0°C (41.0°F)
Min Temperature10.0°C (50.0°F)4.71°C (40.48°F)-1.0°C (30.2°F)
Dew PointMaxAverageMin
Dew Point9.0°C (48.2°F)3.42°C (38.16°F)-1.0°C (30.2°F)
PrecipitationMaxAverageMinSum
Precipitation24.0mm | 0.94in1.84mm | 0.07in0.0mm | 0in57.0mm | 2.24in
Snowdepth0.0mm | 0in0.0mm | 0in0.0mm | 0in0.0mm | 0in
WindMaxAverageMin
Wind44.0kmh | 27.34mph27.87kmh | 17.32mph12.0kmh | 7.46mph
Gust Wind72.0kmh | 44.74mph41.42kmh | 25.74mph18.0kmh | 11.18mph
Sea Level PressureMaxAverageMin
Sea Level Pressure24.0mb1.84mb0.0mb
Portsmouth

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
March° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2020-03-017 | 44.62 | 35.66934 | 21.1329.23 | 9900.5 | 0.02
2020-03-026 | 42.82 | 35.67430 | 18.6429.23 | 9905.7 | 0.22
2020-03-037 | 44.61 | 33.87023 | 14.2929.65 | 10040.5 | 0.02
2020-03-046 | 42.84 | 39.28322 | 13.6729.74 | 10072.4 | 0.09
2020-03-057 | 44.66 | 42.89224 | 14.9129.29 | 99224.0 | 0.94
2020-03-065 | 41.02 | 35.68020 | 12.4329.65 | 10040.5 | 0.02
2020-03-078 | 46.45 | 41.08423 | 14.2930.0 | 10160.1 | 0.0
2020-03-089 | 48.26 | 42.88237 | 22.9929.77 | 10083.0 | 0.12
2020-03-098 | 46.44 | 39.28032 | 19.8829.94 | 10143.1 | 0.12
2020-03-1011 | 51.89 | 48.29344 | 27.3429.8 | 10095.6 | 0.22
2020-03-1110 | 50.08 | 46.48638 | 23.6129.85 | 10110.3 | 0.01
2020-03-127 | 44.62 | 35.67141 | 25.4829.88 | 10120.3 | 0.01
2020-03-138 | 46.43 | 37.47625 | 15.5330.09 | 10190.2 | 0.01
2020-03-149 | 48.26 | 42.88626 | 16.1629.97 | 10152.5 | 0.1
2020-03-159 | 48.26 | 42.88431 | 19.2629.77 | 10080.9 | 0.04
2020-03-168 | 46.43 | 37.47412 | 7.4630.15 | 10210.1 | 0.0
2020-03-179 | 48.25 | 41.07920 | 12.4330.36 | 10280.0 | 0.0
2020-03-1810 | 50.07 | 44.68823 | 14.2930.27 | 10250.0 | 0.0
2020-03-1910 | 50.07 | 44.68812 | 7.4630.24 | 10240.0 | 0.0
2020-03-206 | 42.84 | 39.28535 | 21.7530.3 | 10266.4 | 0.25
2020-03-217 | 44.62 | 35.66938 | 23.6130.3 | 10260.0 | 0.0
2020-03-226 | 42.81 | 33.86833 | 20.5130.27 | 10250.0 | 0.0
2020-03-236 | 42.81 | 33.86534 | 21.1330.3 | 10260.0 | 0.0
2020-03-247 | 44.62 | 35.66923 | 14.2930.27 | 10250.0 | 0.0
2020-03-257 | 44.61 | 33.86719 | 11.8130.24 | 10240.0 | 0.0
2020-03-267 | 44.60 | 32.06721 | 13.0530.18 | 10220.0 | 0.0
2020-03-278 | 46.43 | 37.47422 | 13.6730.18 | 10220.0 | 0.0
2020-03-289 | 48.23 | 37.47434 | 21.1330.33 | 10270.0 | 0.0
2020-03-296 | 42.8-1 | 30.26335 | 21.7530.62 | 10370.2 | 0.01
2020-03-305 | 41.01 | 33.87827 | 16.7830.53 | 10340.7 | 0.03
2020-03-317 | 44.61 | 33.87126 | 16.1630.45 | 10310.0 | 0.0

Portsmouth 10 Year Historical Weather Data

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