Weather in Cascais on 15 August 2026
Preliminary outlook for 15 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +24°C and nighttime around +19°C, average precipitation 0 mm, wind around 6 m/s, humidity around 79%.
This is a climate-based estimate, not a precise long-range forecast. It is replaced by hourly data when the date enters the forecast window.
+21°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +19°C
Precipitation: 0 mm
Wind: 5 — 6 m/s
Humidity: 79%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +23°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 2% |
| Pressure (avg.) | 762 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +21°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 332° ↖ (NW) |
Sunrise
06:51
Duration
13 h 41 min
Sunset
20:32
Moonrise
23:32
Moonset
13:19
Moon phase
Last Quarter
Illumination
51%
+21°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +18°C
Sea temperature: +20°C
Precipitation: 0 mm
Wind: 7 — 10 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 0% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +20°C |
| Feels like (avg.) | +23°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +23°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 15 m/s | Wind direction (avg.) | 262° ↖ (NNW) |
Sunrise
06:52
Duration
13 h 39 min
Sunset
20:31
Moonrise
17:52
Moonset
01:50
Moon phase
Waxing Gibbous
Illumination
71%
+20°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +19°C
Precipitation: 0 mm
Wind: 6 — 8 m/s
Humidity: 83%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +23°C | Sun hours | 13 h |
| UV index | 6 | Cloud cover (avg.) | 19% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +21°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +21°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 12 m/s | Wind direction (avg.) | 342° ↖ (NNW) |
Sunrise
06:51
Duration
13 h 41 min
Sunset
20:32
Moonrise
05:51
Moonset
20:40
Moon phase
New Moon
Illumination
0%
+21°C
Weather archive — for 2022 year
Clear/Sunny
Weather archive — for 2022 year
Nighttime: +19°C
Precipitation: 0 mm
Wind: 6 — 8 m/s
Humidity: 81%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 8% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 325° ↖ (NW) |
Sunrise
06:51
Duration
13 h 41 min
Sunset
20:32
Moonrise
22:46
Moonset
10:26
Moon phase
Waning Gibbous
Illumination
76%
+21°C
Weather archive — for 2021 year
Partly Cloudy
Weather archive — for 2021 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 7 — 8 m/s
Humidity: 75%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 28% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 15 m/s | Wind direction (avg.) | 267° ↑ (N) |
Sunrise
06:51
Duration
13 h 41 min
Sunset
20:32
Moonrise
13:51
Moonset
Does not set today
Moon phase
First Quarter
Illumination
47%
+20°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 4 — 6 m/s
Humidity: 82%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 14 h |
| UV index | 5 | Cloud cover (avg.) | 4% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +20°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +20°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 320° ↖ (NW) |
Sunrise
06:52
Duration
13 h 39 min
Sunset
20:31
Moonrise
02:59
Moonset
18:17
Moon phase
Waning Crescent
Illumination
16%
Weather in Cascais on 15 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+23°C
|
+19°C
|
+21°C | 14 h | 6 | 79% | 5 — 6 m/s |
| 2024 |
+24°C
|
+18°C
|
+21°C | 14 h | 6 | 75% | 7 — 10 m/s |
| 2023 |
+23°C
|
+19°C
|
+20°C | 13 h | 6 | 83% | 6 — 8 m/s |
| 2022 |
+24°C
|
+19°C
|
+21°C | 14 h | 6 | 81% | 6 — 8 m/s |
| 2021 |
+25°C
|
+18°C
|
+21°C | 14 h | 6 | 75% | 7 — 8 m/s |
| 2020 |
+22°C
|
+18°C
|
+20°C | 14 h | 5 | 82% | 4 — 6 m/s |