Weather in Sintra on 4 August 2026
Preliminary outlook for 4 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +25°C and nighttime around +18°C, average precipitation 0 mm, wind around 7 m/s, humidity around 74%.
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: +20°C
Precipitation: 0 mm
Wind: 3 — 5 m/s
Humidity: 66%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +26°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 1% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +24°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +24°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 226° ↓ (SSW) |
Sunrise
06:41
Duration
14 h 04 min
Sunset
20:45
Moonrise
17:50
Moonset
01:54
Moon phase
Waxing Gibbous
Illumination
69%
+22°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +18°C
Sea temperature: +21°C
Precipitation: 0 mm
Wind: 7 — 8 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +26°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 6% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +21°C |
| Feels like (avg.) | +22°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 13 m/s | Wind direction (avg.) | 351° ↑ (N) |
Sunrise
06:41
Duration
14 h 04 min
Sunset
20:45
Moonrise
06:25
Moonset
21:14
Moon phase
New Moon
Illumination
0%
+21°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +17°C
Precipitation: 0 mm
Wind: 8 — 11 m/s
Humidity: 65%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°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.) | 17 m/s | Wind direction (avg.) | 270° ↑ (N) |
Sunrise
06:41
Duration
14 h 05 min
Sunset
20:46
Moonrise
22:40
Moonset
09:21
Moon phase
Waning Gibbous
Illumination
78%
+21°C
Weather archive — for 2022 year
Clear/Sunny
Weather archive — for 2022 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 7 — 8 m/s
Humidity: 82%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 17% |
| Pressure (avg.) | 761 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.) | +20°C |
| Wind gusts (max.) | 13 m/s | Wind direction (avg.) | 343° ↖ (NNW) |
Sunrise
06:41
Duration
14 h 04 min
Sunset
20:45
Moonrise
13:12
Moonset
Does not set today
Moon phase
First Quarter
Illumination
44%
+20°C
Weather archive — for 2021 year
Clear/Sunny
Weather archive — for 2021 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 7 — 8 m/s
Humidity: 79%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 14 h |
| UV index | 5 | Cloud cover (avg.) | 26% |
| 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.) | +16°C |
| Heat index (avg.) | +21°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 13 m/s | Wind direction (avg.) | 349° ↖ (NNW) |
Sunrise
06:41
Duration
14 h 04 min
Sunset
20:45
Moonrise
02:56
Moonset
18:22
Moon phase
Waning Crescent
Illumination
18%
+21°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 8 — 9 m/s
Humidity: 77%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 7% |
| 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.) | 15 m/s | Wind direction (avg.) | 352° ↑ (N) |
Sunrise
06:41
Duration
14 h 04 min
Sunset
20:45
Moonrise
21:44
Moonset
07:14
Moon phase
Full Moon
Illumination
100%
Weather in Sintra on 4 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+26°C
|
+20°C
|
+23°C | 14 h | 6 | 66% | 3 — 5 m/s |
| 2024 |
+26°C
|
+18°C
|
+22°C | 14 h | 6 | 76% | 7 — 8 m/s |
| 2023 |
+25°C
|
+17°C
|
+21°C | 14 h | 6 | 65% | 8 — 11 m/s |
| 2022 |
+25°C
|
+18°C
|
+21°C | 14 h | 6 | 82% | 7 — 8 m/s |
| 2021 |
+22°C
|
+18°C
|
+20°C | 14 h | 5 | 79% | 7 — 8 m/s |
| 2020 |
+25°C
|
+18°C
|
+21°C | 14 h | 6 | 77% | 8 — 9 m/s |