Weather in Vila Nova de Gaia on 18 August 2026
Preliminary outlook for 18 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +25°C and nighttime around +18°C, average precipitation 0.1 mm, wind around 4 m/s, humidity around 73%.
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.
+20°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +17°C
Precipitation: 0 mm
Wind: 4 — 7 m/s
Humidity: 71%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +23°C | Sun hours | 11 h |
| UV index | 4 | Cloud cover (avg.) | 50% |
| 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.) | +14°C |
| Heat index (avg.) | +20°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 332° ↖ (NW) |
Sunrise
06:47
Duration
13 h 42 min
Sunset
20:29
Moonrise
00:44
Moonset
17:05
Moon phase
Last Quarter
Illumination
29%
+21°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +18°C
Sea temperature: +19°C
Precipitation: 0 mm
Wind: 5 — 6 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 13 h |
| UV index | 6 | Cloud cover (avg.) | 18% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 km | Sea temperature | +19°C |
| Feels like (avg.) | +21°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 248° ↖ (NW) |
Sunrise
06:47
Duration
13 h 41 min
Sunset
20:28
Moonrise
20:07
Moonset
04:42
Moon phase
Waxing Gibbous
Illumination
93%
+21°C
Weather archive — for 2023 year
Partly Cloudy
Weather archive — for 2023 year
Nighttime: +18°C
Precipitation: 0.1 mm
Wind: 4 — 6 m/s
Humidity: 81%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 12 h |
| UV index | 6 | Cloud cover (avg.) | 66% |
| 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.) | 185° ↙ (SW) |
Sunrise
06:46
Duration
13 h 43 min
Sunset
20:29
Moonrise
08:52
Moonset
21:49
Moon phase
Waxing Crescent
Illumination
9%
+22°C
Weather archive — for 2022 year
Clear/Sunny
Weather archive — for 2022 year
Nighttime: +16°C
Precipitation: 0 mm
Wind: 5 — 6 m/s
Humidity: 63%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 3% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 175° ↖ (NNW) |
Sunrise
06:47
Duration
13 h 42 min
Sunset
20:29
Moonrise
Does not rise today
Moonset
13:59
Moon phase
Last Quarter
Illumination
54%
+22°C
Weather archive — for 2021 year
Clear/Sunny
Weather archive — for 2021 year
Nighttime: +19°C
Precipitation: 0 mm
Wind: 3 — 5 m/s
Humidity: 58%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +26°C | Sun hours | 13 h |
| UV index | 6 | Cloud cover (avg.) | 3% |
| 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.) | +13°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 252° ↖ (NW) |
Sunrise
06:47
Duration
13 h 41 min
Sunset
20:28
Moonrise
17:29
Moonset
01:36
Moon phase
Waxing Gibbous
Illumination
69%
+21°C
Weather archive — for 2020 year
Patchy rain nearby
Weather archive — for 2020 year
Nighttime: +20°C
Precipitation: 0.4 mm
Wind: 4 — 4 m/s
Humidity: 87%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +23°C | Sun hours | 4 h |
| UV index | 5 | Cloud cover (avg.) | 82% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 9 km | Sea temperature | — |
| Feels like (avg.) | +21°C | Dew point (avg.) | +19°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 206° ↙ (SW) |
Sunrise
06:47
Duration
13 h 41 min
Sunset
20:28
Moonrise
05:40
Moonset
20:31
Moon phase
New Moon
Illumination
0%
Weather in Vila Nova de Gaia on 18 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+23°C
|
+17°C
|
+20°C | 11 h | 4 | 71% | 4 — 7 m/s |
| 2024 |
+25°C
|
+18°C
|
+21°C | 13 h | 6 | 76% | 5 — 6 m/s |
| 2023 |
+25°C
|
+18°C
|
+21°C | 12 h | 6 | 81% | 4 — 6 m/s |
| 2022 |
+29°C
|
+16°C
|
+22°C | 14 h | 6 | 63% | 5 — 6 m/s |
| 2021 |
+26°C
|
+19°C
|
+22°C | 13 h | 6 | 58% | 3 — 5 m/s |
| 2020 |
+23°C
|
+20°C
|
+21°C | 4 h | 5 | 87% | 4 — 4 m/s |