Lisbon
Portugal
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 37 | 33 | 26 | 23 | 21 | 25 | 28 | 29 | 35 | 42 | 41 | 38 | 42 |
| Average high, °C | 26 | 22 | 18 | 15 | 15 | 16 | 18 | 19 | 21 | 25 | 28 | 28 | 21 |
| Average temperature, °C | 19 | 16 | 13 | 10 | 9 | 10 | 12 | 14 | 15 | 18 | 19 | 20 | 15 |
| Average low, °C | 17 | 15 | 12 | 10 | 8 | 9 | 10 | 12 | 13 | 16 | 18 | 18 | 13 |
| Record low, °C | 11 | 8 | 4 | 2 | 0 | 1 | 3 | 6 | 7 | 10 | 13 | 14 | 0 |
| Rain, days | 8 | 13 | 15 | 17 | 16 | 16 | 15 | 16 | 13 | 9 | 5 | 4 | 147 |
| Fog, days | 15 | 16 | 17 | 18 | 19 | 14 | 14 | 12 | 14 | 15 | 14 | 14 | 182 |
| Thunderstorms, days | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 0 | 14 |
| Average precipitation, mm. | 29 | 76 | 112 | 123 | 130 | 97 | 114 | 63 | 52 | 16 | 4 | 5 | 821 |
| Relative humidity, % | 70 | 75 | 80 | 85 | 80 | 80 | 75 | 70 | 70 | 70 | 65 | 65 | 74 |
| Relative humidity morning, % | 82 | 84 | 86 | 86 | 85 | 84 | 83 | 83 | 82 | 83 | 80 | 80 | 83 |
| Relative humidity evening, % | 51 | 62 | 71 | 75 | 72 | 68 | 61 | 61 | 57 | 54 | 48 | 48 | 61 |
| Wind speed, km/h | 16 | 16 | 14 | 9 | 9 | 16 | 17 | 17 | 19 | 19 | 20 | 19 | 16 |
| Day Length, часов | 13 | 12 | 11 | 10 | 10 | 11 | 12 | 14 | 15 | 15 | 15 | 14 | 13 |
| Dew point, °C | 14 | 12 | 10 | 8 | 6 | 7 | 7 | 8 | 10 | 13 | 14 | 14 | 123 |
| Growing degree-day, °C | 310 | 267 | 172 | 83 | 21 | 0 | 0 | 52 | 117 | 155 | 233 | 276 | 1686 |
| Solar radiation, global, Mj/m2 | 17 | 12 | 8 | 6 | 8 | 11 | 15 | 19 | 22 | 25 | 25 | 22 | 16 |