Weather in Piran on 18 August 2026
Preliminary outlook for 18 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +29°C and nighttime around +20°C, average precipitation 0 mm, wind around 3 m/s, humidity around 66%.
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.
+24°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +20°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 58%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 25% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +25°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +25°C | Wind chill (avg.) | +25°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 63° ↗ (NE) |
Sunrise
06:10
Duration
13 h 58 min
Sunset
20:08
Moonrise
Does not rise today
Moonset
16:54
Moon phase
Last Quarter
Illumination
29%
+24°C
Weather archive — for 2024 year
Overcast
Weather archive — for 2024 year
Nighttime: +21°C
Sea temperature: +26°C
Precipitation: 0 mm
Wind: 2 — 4 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +28°C | Sun hours | 5 h |
| UV index | 6 | Cloud cover (avg.) | 65% |
| Pressure (avg.) | 756 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +26°C |
| Feels like (avg.) | +26°C | Dew point (avg.) | +20°C |
| Heat index (avg.) | +27°C | Wind chill (avg.) | +25°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 148° ↙ (SW) |
Sunrise
06:10
Duration
13 h 58 min
Sunset
20:08
Moonrise
19:50
Moonset
03:51
Moon phase
Waxing Gibbous
Illumination
93%
+26°C
Weather archive — for 2023 year
Cloudy
Weather archive — for 2023 year
Nighttime: +21°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 61%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 26% |
| Pressure (avg.) | 762 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +27°C | Dew point (avg.) | +18°C |
| Heat index (avg.) | +27°C | Wind chill (avg.) | +25°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 208° ↖ (NNW) |
Sunrise
06:09
Duration
14 h 00 min
Sunset
20:09
Moonrise
08:15
Moonset
21:22
Moon phase
Waxing Crescent
Illumination
9%
+26°C
Weather archive — for 2022 year
Cloudy
Weather archive — for 2022 year
Nighttime: +21°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 64%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 13 h |
| UV index | 7 | Cloud cover (avg.) | 23% |
| Pressure (avg.) | 759 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +27°C | Dew point (avg.) | +18°C |
| Heat index (avg.) | +28°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 187° ↙ (WSW) |
Sunrise
06:10
Duration
13 h 59 min
Sunset
20:09
Moonrise
23:19
Moonset
13:38
Moon phase
Last Quarter
Illumination
54%
+22°C
Weather archive — for 2021 year
Clear/Sunny
Weather archive — for 2021 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 5 — 5 m/s
Humidity: 56%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +26°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 22% |
| 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.) | +11°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 72° ↗ (ENE) |
Sunrise
06:10
Duration
13 h 58 min
Sunset
20:08
Moonrise
17:15
Moonset
00:47
Moon phase
Waxing Gibbous
Illumination
69%
+23°C
Weather archive — for 2020 year
Cloudy
Weather archive — for 2020 year
Nighttime: +20°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 79%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 9 h |
| UV index | 5 | Cloud cover (avg.) | 75% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 km | Sea temperature | — |
| Feels like (avg.) | +24°C | Dew point (avg.) | +19°C |
| Heat index (avg.) | +25°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 104° ↘ (SSE) |
Sunrise
06:10
Duration
13 h 58 min
Sunset
20:08
Moonrise
04:53
Moonset
20:12
Moon phase
New Moon
Illumination
0%
Weather in Piran on 18 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+31°C
|
+20°C
|
+24°C | 14 h | 6 | 58% | 2 — 3 m/s |
| 2024 |
+28°C
|
+21°C
|
+24°C | 5 h | 6 | 77% | 2 — 4 m/s |
| 2023 |
+31°C
|
+21°C
|
+26°C | 14 h | 7 | 61% | 2 — 3 m/s |
| 2022 |
+31°C
|
+21°C
|
+26°C | 13 h | 7 | 64% | 3 — 4 m/s |
| 2021 |
+26°C
|
+18°C
|
+22°C | 14 h | 6 | 56% | 5 — 5 m/s |
| 2020 |
+25°C
|
+20°C
|
+23°C | 9 h | 5 | 79% | 2 — 3 m/s |