Cascais Climate by Month
Cascais, Lisbon, Portugal
Warm summers and mild winters, with rain spread through the year.
The climate in Cascais is one of warm summers and mild winters, with rain spread through the year. Expect highs of 76°F (24°C) in August and 59°F (15°C) in January, with the coldest nights (January) near 48°F (9°C). About 25 in (629 mm) of rain falls in a typical year, with no clear rainy season. July and August are almost completely dry.
- Warmest month
- 76°F(24°C)
- Average high, August
- Coldest nights
- 48°F(9°C)
- Average low, January
- Rain per year
- 25 in(629 mm)
- No clear rainy season
- Humidity
- 77%
- Sunniest: July
Best and worst months in Cascais
Best for weatherThe most comfortable weather comes in July and August, with highs around 76°F (24°C) and almost no rain.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 60°F (16°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in July.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Cascais weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 59°F(15°C) | 48°F(9°C) | 3.0 in(76 mm) | 79% | 2.2 |
| FebFebruary | 60°F(16°C) | 49°F(10°C) | 2.3 in(59 mm) | 75% | 3.0 |
| MarMarch | 64°F(18°C) | 52°F(11°C) | 2.0 in(51 mm) | 80% | 4.1 |
| AprApril | 65°F(18°C) | 54°F(12°C) | 2.1 in(54 mm) | 75% | 5.5 |
| MayMay | 69°F(20°C) | 57°F(14°C) | 1.7 in(43 mm) | 76% | 6.7 |
| JunJune | 73°F(23°C) | 61°F(16°C) | 0.6 in(15 mm) | 76% | 7.2 |
| JulJulyBest | 75°F(24°C) | 62°F(17°C) | 0.2 in(4 mm) | 75% | 7.3 |
| AugAugustBest | 76°F(24°C) | 63°F(17°C) | 0.3 in(7 mm) | 78% | 6.6 |
| SepSeptember | 74°F(23°C) | 62°F(16°C) | 1.4 in(35 mm) | 78% | 5.0 |
| OctOctober | 70°F(21°C) | 59°F(15°C) | 3.2 in(82 mm) | 77% | 3.6 |
| NovNovember | 64°F(18°C) | 53°F(12°C) | 4.2 in(106 mm) | 78% | 2.4 |
| DecDecember | 60°F(16°C) | 50°F(10°C) | 3.8 in(97 mm) | 81% | 1.9 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
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