Weather in Porto 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 +17°C, average precipitation 0 mm, wind around 3 m/s, humidity around 72%.
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: +18°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 68%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +23°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 0% |
| Pressure (avg.) | 762 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.) | +23°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 242° ↙ (WSW) |
Sunrise
06:44
Duration
13 h 49 min
Sunset
20:33
Moonrise
23:23
Moonset
13:22
Moon phase
Last Quarter
Illumination
51%
+21°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +17°C
Sea temperature: +18°C
Precipitation: 0 mm
Wind: 3 — 5 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +26°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 0% |
| Pressure (avg.) | 762 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +18°C |
| Feels like (avg.) | +22°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 173° ↖ (NW) |
Sunrise
06:44
Duration
13 h 49 min
Sunset
20:33
Moonrise
17:59
Moonset
01:36
Moon phase
Waxing Gibbous
Illumination
71%
+20°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +17°C
Precipitation: 0 mm
Wind: 3 — 6 m/s
Humidity: 81%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 14 h |
| UV index | 5 | Cloud cover (avg.) | 14% |
| Pressure (avg.) | 762 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.) | +21°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 249° ↖ (NW) |
Sunrise
06:43
Duration
13 h 51 min
Sunset
20:34
Moonrise
05:41
Moonset
20:43
Moon phase
New Moon
Illumination
0%
+19°C
Weather archive — for 2022 year
Clear/Sunny
Weather archive — for 2022 year
Nighttime: +16°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 79%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 13 h |
| UV index | 5 | Cloud cover (avg.) | 16% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +19°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +21°C | Wind chill (avg.) | +19°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 241° ← (WNW) |
Sunrise
06:44
Duration
13 h 49 min
Sunset
20:33
Moonrise
22:42
Moonset
10:23
Moon phase
Waning Gibbous
Illumination
76%
+22°C
Weather archive — for 2021 year
Clear/Sunny
Weather archive — for 2021 year
Nighttime: +19°C
Precipitation: 0 mm
Wind: 4 — 6 m/s
Humidity: 71%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +26°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 0% |
| 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.) | +16°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 253° ↖ (NW) |
Sunrise
06:44
Duration
13 h 49 min
Sunset
20:33
Moonrise
13:52
Moonset
Does not set today
Moon phase
First Quarter
Illumination
47%
+19°C
Weather archive — for 2020 year
Patchy rain nearby
Weather archive — for 2020 year
Nighttime: +17°C
Precipitation: 0.1 mm
Wind: 3 — 4 m/s
Humidity: 78%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 7 h |
| UV index | 5 | Cloud cover (avg.) | 54% |
| Pressure (avg.) | 762 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +19°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +19°C | Wind chill (avg.) | +19°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 249° ↙ (WSW) |
Sunrise
06:44
Duration
13 h 49 min
Sunset
20:33
Moonrise
02:47
Moonset
18:22
Moon phase
Waning Crescent
Illumination
16%
Weather in Porto on 15 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+23°C
|
+18°C
|
+21°C | 14 h | 6 | 68% | 3 — 4 m/s |
| 2024 |
+26°C
|
+17°C
|
+21°C | 14 h | 6 | 57% | 3 — 5 m/s |
| 2023 |
+24°C
|
+17°C
|
+20°C | 14 h | 5 | 81% | 3 — 6 m/s |
| 2022 |
+22°C
|
+16°C
|
+19°C | 13 h | 5 | 79% | 3 — 4 m/s |
| 2021 |
+26°C
|
+19°C
|
+22°C | 14 h | 6 | 71% | 4 — 6 m/s |
| 2020 |
+22°C
|
+17°C
|
+19°C | 7 h | 5 | 78% | 3 — 4 m/s |