Weather in Lisbon on 4 August 2026
Preliminary outlook for 4 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +29°C and nighttime around +18°C, average precipitation 0 mm, wind around 5 m/s, humidity around 64%.
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.
+25°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +21°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 53%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 1% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +26°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +26°C | Wind chill (avg.) | +25°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 205° ↙ (SW) |
Sunrise
06:40
Duration
14 h 04 min
Sunset
20:44
Moonrise
17:49
Moonset
01:53
Moon phase
Waxing Gibbous
Illumination
69%
+23°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +18°C
Sea temperature: +20°C
Precipitation: 0 mm
Wind: 5 — 8 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 1% |
| 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.) | +16°C |
| Heat index (avg.) | +23°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 338° ↖ (NNW) |
Sunrise
06:41
Duration
14 h 03 min
Sunset
20:44
Moonrise
06:24
Moonset
21:13
Moon phase
New Moon
Illumination
0%
+22°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +16°C
Precipitation: 0 mm
Wind: 7 — 9 m/s
Humidity: 54%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°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.) | +11°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 15 m/s | Wind direction (avg.) | 269° ↑ (NNE) |
Sunrise
06:40
Duration
14 h 04 min
Sunset
20:44
Moonrise
22:39
Moonset
09:20
Moon phase
Waning Gibbous
Illumination
78%
+22°C
Weather archive — for 2022 year
Clear/Sunny
Weather archive — for 2022 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 5 — 6 m/s
Humidity: 73%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +28°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 13% |
| 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.) | +17°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 334° ↖ (NW) |
Sunrise
06:40
Duration
14 h 04 min
Sunset
20:44
Moonrise
13:11
Moonset
Does not set today
Moon phase
First Quarter
Illumination
44%
+21°C
Weather archive — for 2021 year
Clear/Sunny
Weather archive — for 2021 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 6 — 8 m/s
Humidity: 68%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +26°C | Sun hours | 13 h |
| UV index | 6 | Cloud cover (avg.) | 20% |
| 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.) | 13 m/s | Wind direction (avg.) | 348° ↖ (NNW) |
Sunrise
06:40
Duration
14 h 04 min
Sunset
20:44
Moonrise
02:55
Moonset
18:21
Moon phase
Waning Crescent
Illumination
18%
+22°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 6 — 8 m/s
Humidity: 68%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +28°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 4% |
| 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.) | +15°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 14 m/s | Wind direction (avg.) | 346° ↑ (N) |
Sunrise
06:41
Duration
14 h 03 min
Sunset
20:44
Moonrise
21:43
Moonset
07:13
Moon phase
Full Moon
Illumination
100%
Weather in Lisbon on 4 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+30°C
|
+21°C
|
+25°C | 14 h | 7 | 53% | 3 — 4 m/s |
| 2024 |
+30°C
|
+18°C
|
+23°C | 14 h | 6 | 67% | 5 — 8 m/s |
| 2023 |
+29°C
|
+16°C
|
+22°C | 14 h | 6 | 54% | 7 — 9 m/s |
| 2022 |
+28°C
|
+18°C
|
+22°C | 14 h | 6 | 73% | 5 — 6 m/s |
| 2021 |
+26°C
|
+18°C
|
+21°C | 13 h | 6 | 68% | 6 — 8 m/s |
| 2020 |
+28°C
|
+18°C
|
+22°C | 14 h | 6 | 68% | 6 — 8 m/s |