Weather in Piraeus on 20 August 2026
Preliminary outlook for 20 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +33°C and nighttime around +25°C, average precipitation 0 mm, wind around 3 m/s, humidity around 44%.
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.
+27°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +24°C
Precipitation: 0 mm
Wind: 2 — 4 m/s
Humidity: 53%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 8% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +28°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +28°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 197° ↙ (SW) |
Sunrise
06:45
Duration
13 h 27 min
Sunset
20:12
Moonrise
02:50
Moonset
18:34
Moon phase
Waning Crescent
Illumination
15%
+28°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +26°C
Sea temperature: +27°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 8% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +27°C |
| Feels like (avg.) | +30°C | Dew point (avg.) | +18°C |
| Heat index (avg.) | +30°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 157° ↓ (SSW) |
Sunrise
06:45
Duration
13 h 26 min
Sunset
20:11
Moonrise
20:46
Moonset
06:59
Moon phase
Full Moon
Illumination
100%
+28°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +22°C
Precipitation: 0 mm
Wind: 4 — 6 m/s
Humidity: 41%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +33°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 3% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +28°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +28°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 94° ↑ (NNE) |
Sunrise
06:44
Duration
13 h 28 min
Sunset
20:12
Moonrise
10:36
Moonset
22:19
Moon phase
Waxing Crescent
Illumination
23%
+31°C
Weather archive — for 2022 year
Clear/Sunny
Weather archive — for 2022 year
Nighttime: +27°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 34%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +37°C | Sun hours | 14 h |
| UV index | 8 | Cloud cover (avg.) | 4% |
| Pressure (avg.) | 756 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +31°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +31°C | Wind chill (avg.) | +31°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 180° ↘ (SE) |
Sunrise
06:45
Duration
13 h 27 min
Sunset
20:12
Moonrise
00:35
Moonset
15:48
Moon phase
Last Quarter
Illumination
39%
+28°C
Weather archive — for 2021 year
Clear/Sunny
Weather archive — for 2021 year
Nighttime: +25°C
Precipitation: 0 mm
Wind: 4 — 5 m/s
Humidity: 40%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 7% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +29°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 50° ↑ (NNE) |
Sunrise
06:45
Duration
13 h 27 min
Sunset
20:12
Moonrise
19:04
Moonset
03:36
Moon phase
Waxing Gibbous
Illumination
83%
+28°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +25°C
Precipitation: 0 mm
Wind: 3 — 6 m/s
Humidity: 43%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 7% |
| Pressure (avg.) | 756 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 73° ↑ (N) |
Sunrise
06:45
Duration
13 h 26 min
Sunset
20:11
Moonrise
07:45
Moonset
21:19
Moon phase
Waxing Crescent
Illumination
6%
Weather in Piraeus on 20 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+30°C
|
+24°C
|
+27°C | 14 h | 7 | 53% | 2 — 4 m/s |
| 2024 |
+31°C
|
+26°C
|
+28°C | 14 h | 7 | 54% | 2 — 3 m/s |
| 2023 |
+33°C
|
+22°C
|
+28°C | 14 h | 7 | 41% | 4 — 6 m/s |
| 2022 |
+37°C
|
+27°C
|
+31°C | 14 h | 8 | 34% | 2 — 3 m/s |
| 2021 |
+32°C
|
+25°C
|
+28°C | 14 h | 7 | 40% | 4 — 5 m/s |
| 2020 |
+32°C
|
+25°C
|
+28°C | 14 h | 7 | 43% | 3 — 6 m/s |