San Mateo, California vs Portimão Climate
67%matchSan Mateo vs Portimão: a 67% climate match. Compared with San Mateo, Portimão has 8°F (5°C) hotter summer days, 4°F (2°C) milder winter nights and less rain in winter.
San Mateo gets 20 in (511 mm) of rain a year and Portimão 19 in (480 mm). San Mateo's warmest month is September, at 76°F (24°C); Portimão's is August, at 83°F (29°C).
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
San MateoPortimãosolid = high, dashed = low
Rain (in per month)
San MateoPortimão
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| San Mateo | Portimão | San Mateo | Portimão | San Mateo | Portimão | |
| Jan | 59°F(15°C) | 61°F(16°C) | 43°F(6°C) | 47°F(8°C) | 4.1 in(105 mm) | 2.0 in(51 mm) |
| Feb | 62°F(17°C) | 62°F(17°C) | 45°F(7°C) | 47°F(9°C) | 3.9 in(98 mm) | 2.0 in(52 mm) |
| Mar | 64°F(18°C) | 66°F(19°C) | 46°F(8°C) | 51°F(10°C) | 2.8 in(72 mm) | 2.2 in(55 mm) |
| Apr | 67°F(20°C) | 69°F(20°C) | 47°F(9°C) | 53°F(12°C) | 1.5 in(37 mm) | 1.7 in(43 mm) |
| May | 69°F(21°C) | 74°F(23°C) | 50°F(10°C) | 57°F(14°C) | 0.6 in(14 mm) | 1.0 in(25 mm) |
| Jun | 73°F(23°C) | 80°F(26°C) | 53°F(12°C) | 61°F(16°C) | 0.2 in(4 mm) | 0.2 in(6 mm) |
| Jul | 74°F(23°C) | 83°F(28°C) | 55°F(13°C) | 64°F(18°C) | 0.0 in(1 mm) | 0.0 in(0 mm) |
| Aug | 75°F(24°C) | 83°F(29°C) | 56°F(13°C) | 65°F(18°C) | 0.0 in(1 mm) | 0.1 in(2 mm) |
| Sep | 76°F(24°C) | 79°F(26°C) | 55°F(13°C) | 62°F(17°C) | 0.1 in(2 mm) | 0.9 in(22 mm) |
| Oct | 73°F(23°C) | 74°F(23°C) | 51°F(10°C) | 58°F(15°C) | 1.1 in(27 mm) | 2.5 in(63 mm) |
| Nov | 65°F(19°C) | 67°F(19°C) | 46°F(8°C) | 53°F(11°C) | 2.2 in(56 mm) | 2.9 in(74 mm) |
| Dec | 59°F(15°C) | 63°F(17°C) | 42°F(6°C) | 49°F(10°C) | 3.7 in(94 mm) | 3.4 in(87 mm) |
1991–2020 averages, by calendar month.