Weather in Viana do Castelo on 5 August 2026
Preliminary outlook for 5 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +25°C and nighttime around +17°C, average precipitation 0 mm, wind around 4 m/s, humidity around 71%.
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.
+23°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +18°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 58%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 7% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +24°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +24°C | Wind chill (avg.) | +24°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 252° ↖ (NW) |
Sunrise
06:33
Duration
14 h 15 min
Sunset
20:48
Moonrise
18:52
Moonset
02:26
Moon phase
Waxing Gibbous
Illumination
76%
+20°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +16°C
Sea temperature: +19°C
Precipitation: 0 mm
Wind: 6 — 7 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 14 h |
| UV index | 5 | Cloud cover (avg.) | 0% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +19°C |
| Feels like (avg.) | +20°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +21°C | Wind chill (avg.) | +19°C |
| Wind gusts (max.) | 12 m/s | Wind direction (avg.) | 342° ↖ (NW) |
Sunrise
06:34
Duration
14 h 14 min
Sunset
20:48
Moonrise
07:27
Moonset
21:45
Moon phase
New Moon
Illumination
0%
+21°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +16°C
Precipitation: 0 mm
Wind: 6 — 8 m/s
Humidity: 60%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +27°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.) | +21°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +21°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 15 m/s | Wind direction (avg.) | 175° ↖ (NNW) |
Sunrise
06:33
Duration
14 h 16 min
Sunset
20:49
Moonrise
23:03
Moonset
10:32
Moon phase
Waning Gibbous
Illumination
71%
+22°C
Weather archive — for 2022 year
Clear/Sunny
Weather archive — for 2022 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 78%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +27°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 3% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +24°C | Dew point (avg.) | +18°C |
| Heat index (avg.) | +24°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 159° ← (W) |
Sunrise
06:33
Duration
14 h 16 min
Sunset
20:49
Moonrise
14:20
Moonset
00:10
Moon phase
First Quarter
Illumination
51%
+18°C
Weather archive — for 2021 year
Patchy rain nearby
Weather archive — for 2021 year
Nighttime: +14°C
Precipitation: 0.1 mm
Wind: 3 — 4 m/s
Humidity: 80%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 10 h |
| UV index | 5 | Cloud cover (avg.) | 33% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +17°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +17°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 155° ↙ (WSW) |
Sunrise
06:33
Duration
14 h 15 min
Sunset
20:48
Moonrise
03:29
Moonset
19:21
Moon phase
Waning Crescent
Illumination
11%
+21°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +17°C
Precipitation: 0 mm
Wind: 5 — 7 m/s
Humidity: 72%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 11% |
| Pressure (avg.) | 760 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.) | +20°C |
| Wind gusts (max.) | 12 m/s | Wind direction (avg.) | 344° ↖ (NNW) |
Sunrise
06:34
Duration
14 h 14 min
Sunset
20:48
Moonrise
22:20
Moonset
08:15
Moon phase
Waxing Gibbous
Illumination
88%
Weather in Viana do Castelo on 5 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+29°C
|
+18°C
|
+23°C | 14 h | 6 | 58% | 2 — 3 m/s |
| 2024 |
+24°C
|
+16°C
|
+20°C | 14 h | 5 | 79% | 6 — 7 m/s |
| 2023 |
+27°C
|
+16°C
|
+21°C | 14 h | 6 | 60% | 6 — 8 m/s |
| 2022 |
+27°C
|
+18°C
|
+22°C | 14 h | 6 | 78% | 2 — 3 m/s |
| 2021 |
+21°C
|
+14°C
|
+18°C | 10 h | 5 | 80% | 3 — 4 m/s |
| 2020 |
+24°C
|
+17°C
|
+21°C | 14 h | 6 | 72% | 5 — 7 m/s |