Photo by Richard Brooker-Protheroe on Unsplash
Medium city
480K
158 km²
6m
06:11 UTC+0
GBP
Portsmouth, United Kingdom is a 480K-resident city with 149 sunny days and 1 frost days annually and an annual PM2.5 of 8.1 µg/m³. A city in the United Kingdom.
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Take the quizClimate
Feels-like °C
-5
-3
1
7
14
17
17
18
14
9
2
-3
Dinner outside
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Climate Lab·Portsmouth
Monthly climate metrics across temperature, precipitation, wind, and UV.
PortsmouthUnited Kingdom
| Metric | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature | |||||||||||||
| Daily high°C | 10 | 11 | 11 | 13 | 16 | 20 | 21 | 21 | 20 | 16 | 13 | 12 | 15 |
| Daily mean°C | 7 | 8 | 9 | 11 | 14 | 16 | 18 | 19 | 17 | 15 | 11 | 8 | 13 |
| Daily low°C | 2 | 6 | 6 | 8 | 10 | 14 | 15 | 16 | 13 | 12 | 6 | 6 | 9 |
| Thermal comfort | |||||||||||||
| High feelsDaily high feels-like°C | 3 | 7 | 12 | 18 | 20 | 26 | 27 | 26 | 22 | 16 | 11 | 3 | 16 |
| Mean feelsDaily mean feels-like°C | -5 | -3 | 1 | 7 | 14 | 17 | 17 | 18 | 14 | 9 | 2 | -3 | 7 |
| Low feelsDaily low feels-like°C | -12 | -11 | -7 | -4 | 3 | 8 | 10 | 9 | 4 | 1 | -7 | -11 | -1 |
| Humidity | |||||||||||||
| HumidityRelative humidity% | 84 | 83 | 80 | 73 | 77 | 73 | 77 | 79 | 80 | 83 | 83 | 85 | 80 |
| Dewpoint°C | 3.8 | 5.4 | 5.8 | 6.3 | 8.6 | 12.2 | 13.5 | 14.6 | 13.1 | 11.3 | 7.5 | 5.7 | 9.0 |
| Precipitation | |||||||||||||
| Rainfallmm | 92 | 70 | 62 | 35 | 44 | 38 | 72 | 71 | 72 | 154 | 88 | 116 | 914 |
| Rain days≥1mm | 12 | 13 | 11 | 7 | 13 | 13 | 13 | 10 | 11 | 15 | 14 | 14 | 146 |
| Wind | |||||||||||||
| Wind avgm/s | 6.3 | 7.7 | 6.3 | 4.9 | 4.6 | 5.3 | 4.8 | 5.2 | 4.7 | 6.1 | 6.2 | 6.4 | 5.7 |
| Wind gustsm/s | 11.3 | 11.6 | 11.2 | 10.0 | 8.5 | 8.4 | 10.4 | 9.7 | 9.9 | 10.5 | 12.0 | 12.2 | 10.5 |
| Sun & UV | |||||||||||||
| Sunshinehrs/day | 3.8 | 5.0 | 7.9 | 10.2 | 10.9 | 11.4 | 11.8 | 10.2 | 8.2 | 6.0 | 4.0 | 3.0 | 7.7 |
| Clear skyindex | 30% | 29% | 35% | 43% | 37% | 44% | 47% | 41% | 36% | 32% | 33% | 22% | 36% |
| UV indexmax avg | 0.5 | 1.0 | 1.8 | 3.4 | 4.3 | 5.5 | 5.1 | 4.4 | 3.2 | 1.7 | 0.7 | 0.4 | 2.7 |
Based on 2014–2024 hourly climate data · Updated Mar 2025
Confidence: High
Lifestyle Calendar·Portsmouth
Portsmouth offers a solid outdoor season. Even dinner outside manages 3/12 months, while walking is comfortable 11/12 months — impressive.
PortsmouthUnited Kingdom
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Annual
3/12
Dinner Outside29
Jan: 0% viability
0Feb: 0% viability
0Mar: 2% viability
2Apr: 22% viability
22May: 46% viability
46Jun: 69% viability
69Jul: 66% viability
66Aug: 70% viability
70Sep: 56% viability
56Oct: 14% viability
14Nov: 2% viability
2Dec: 0% viability
03/12
Dinner OutsideJan: 0% viability
0Feb: 0% viability
0Mar: 2% viability
2Apr: 22% viability
22May: 46% viability
46Jun: 69% viability
69Jul: 66% viability
66Aug: 70% viability
70Sep: 56% viability
56Oct: 14% viability
14Nov: 2% viability
2Dec: 0% viability
029%
Cold
2/12
Lunch Outside47
Jan: 16% viability
16Feb: 24% viability
24Mar: 34% viability
34Apr: 61% viability
61May: 66% viability
66Jun: 74% viability
74Jul: 59% viability
59Aug: 62% viability
62Sep: 64% viability
64Oct: 48% viability
48Nov: 40% viability
40Dec: 15% viability
152/12
Lunch OutsideJan: 16% viability
16Feb: 24% viability
24Mar: 34% viability
34Apr: 61% viability
61May: 66% viability
66Jun: 74% viability
74Jul: 59% viability
59Aug: 62% viability
62Sep: 64% viability
64Oct: 48% viability
48Nov: 40% viability
40Dec: 15% viability
1547%
Wind
11/12
Walking74
Jan: 68% viability
68Feb: 57% viability
57Mar: 70% viability
70Apr: 83% viability
83May: 84% viability
84Jun: 88% viability
88Jul: 75% viability
75Aug: 78% viability
78Sep: 80% viability
80Oct: 74% viability
74Nov: 71% viability
71Dec: 65% viability
6511/12
WalkingJan: 68% viability
68Feb: 57% viability
57Mar: 70% viability
70Apr: 83% viability
83May: 84% viability
84Jun: 88% viability
88Jul: 75% viability
75Aug: 78% viability
78Sep: 80% viability
80Oct: 74% viability
74Nov: 71% viability
71Dec: 65% viability
6574%
Wind
11/12
Running74
Jan: 68% viability
68Feb: 57% viability
57Mar: 70% viability
70Apr: 83% viability
83May: 84% viability
84Jun: 88% viability
88Jul: 75% viability
75Aug: 78% viability
78Sep: 80% viability
80Oct: 74% viability
74Nov: 71% viability
71Dec: 65% viability
6511/12
RunningJan: 68% viability
68Feb: 57% viability
57Mar: 70% viability
70Apr: 83% viability
83May: 84% viability
84Jun: 88% viability
88Jul: 75% viability
75Aug: 78% viability
78Sep: 80% viability
80Oct: 74% viability
74Nov: 71% viability
71Dec: 65% viability
6574%
Wind
Tap any month for details · Click activity name for overview
ComfortableModerateUncomfortable
Based on 2014–2024 hourly climate data · Updated Mar 2025
Confidence: High
