Portsmouth, United Kingdom vs Cwmbran Climate
99%matchPortsmouth vs Cwmbran: a 99% climate match. Very close: temperatures within 2°F (1°C), with similar rain, humidity and sun.
Portsmouth gets 33 in (844 mm) of rain a year and Cwmbran 40 in (1019 mm). July is the warmest month in both, with highs of 72°F (22°C) in Portsmouth and 70°F (21°C) in Cwmbran.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
PortsmouthCwmbransolid = high, dashed = low
Rain (in per month)
PortsmouthCwmbran
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Portsmouth | Cwmbran | Portsmouth | Cwmbran | Portsmouth | Cwmbran | |
| Jan | 47°F(9°C) | 46°F(8°C) | 38°F(3°C) | 37°F(3°C) | 3.5 in(90 mm) | 3.7 in(94 mm) |
| Feb | 47°F(9°C) | 47°F(8°C) | 37°F(3°C) | 37°F(3°C) | 2.5 in(63 mm) | 3.0 in(76 mm) |
| Mar | 51°F(11°C) | 51°F(11°C) | 40°F(4°C) | 38°F(4°C) | 2.2 in(57 mm) | 2.9 in(74 mm) |
| Apr | 57°F(14°C) | 56°F(13°C) | 43°F(6°C) | 41°F(5°C) | 2.0 in(52 mm) | 2.6 in(65 mm) |
| May | 63°F(17°C) | 62°F(17°C) | 47°F(9°C) | 46°F(8°C) | 1.9 in(47 mm) | 2.6 in(67 mm) |
| Jun | 68°F(20°C) | 67°F(19°C) | 53°F(12°C) | 51°F(11°C) | 2.2 in(55 mm) | 2.7 in(68 mm) |
| Jul | 72°F(22°C) | 70°F(21°C) | 56°F(14°C) | 55°F(13°C) | 2.1 in(53 mm) | 2.7 in(69 mm) |
| Aug | 71°F(22°C) | 69°F(21°C) | 56°F(14°C) | 55°F(13°C) | 2.3 in(59 mm) | 3.5 in(90 mm) |
| Sep | 67°F(19°C) | 65°F(18°C) | 53°F(12°C) | 51°F(11°C) | 2.5 in(63 mm) | 3.1 in(78 mm) |
| Oct | 60°F(16°C) | 58°F(15°C) | 48°F(9°C) | 47°F(8°C) | 4.0 in(102 mm) | 4.3 in(110 mm) |
| Nov | 53°F(12°C) | 52°F(11°C) | 42°F(6°C) | 42°F(5°C) | 4.2 in(107 mm) | 4.6 in(118 mm) |
| Dec | 49°F(9°C) | 47°F(8°C) | 39°F(4°C) | 38°F(3°C) | 3.8 in(96 mm) | 4.3 in(110 mm) |
1991–2020 averages, by calendar month.