Weather in Saint-Jean-de-Luz on 18 August 2026
Preliminary outlook for 18 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +22°C and nighttime around +18°C, average precipitation 2.4 mm, wind around 3 m/s, humidity around 84%.
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.
+20°C
Weather archive — latest year: 2025
Light rain shower
Weather archive — latest year: 2025
Nighttime: +18°C
Precipitation: 0.5 mm
Wind: 3 — 4 m/s
Humidity: 90%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 2 h |
| UV index | 4 | Cloud cover (avg.) | 83% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +20°C | Dew point (avg.) | +18°C |
| Heat index (avg.) | +20°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 301° ↖ (NW) |
Sunrise
07:15
Duration
13 h 50 min
Sunset
21:05
Moonrise
01:05
Moonset
17:47
Moon phase
Last Quarter
Illumination
29%
+19°C
Weather archive — for 2024 year
Moderate rain at times
Weather archive — for 2024 year
Nighttime: +17°C
Sea temperature: +24°C
Precipitation: 2.2 mm
Wind: 3 — 4 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +20°C | Sun hours | 5 h |
| UV index | 4 | Cloud cover (avg.) | 90% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +24°C |
| Feels like (avg.) | +19°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +19°C | Wind chill (avg.) | +19°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 323° ↖ (NNW) |
Sunrise
07:15
Duration
13 h 50 min
Sunset
21:05
Moonrise
20:45
Moonset
05:04
Moon phase
Waxing Gibbous
Illumination
93%
+24°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +20°C
Precipitation: 0 mm
Wind: 2 — 2 m/s
Humidity: 81%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 14 h |
| UV index | 5 | Cloud cover (avg.) | 45% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +25°C | Dew point (avg.) | +20°C |
| Heat index (avg.) | +25°C | Wind chill (avg.) | +24°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 236° ↑ (NNE) |
Sunrise
07:14
Duration
13 h 52 min
Sunset
21:06
Moonrise
09:21
Moonset
22:22
Moon phase
Waxing Crescent
Illumination
9%
+19°C
Weather archive — for 2022 year
Moderate or heavy rain shower
Weather archive — for 2022 year
Nighttime: +18°C
Precipitation: 11.1 mm
Wind: 6 — 6 m/s
Humidity: 89%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +19°C | Sun hours | 1 h |
| UV index | 4 | Cloud cover (avg.) | 98% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +19°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +19°C | Wind chill (avg.) | +19°C |
| Wind gusts (max.) | 13 m/s | Wind direction (avg.) | 292° ← (WNW) |
Sunrise
07:15
Duration
13 h 50 min
Sunset
21:05
Moonrise
00:00
Moonset
14:36
Moon phase
Last Quarter
Illumination
54%
+18°C
Weather archive — for 2021 year
Partly Cloudy
Weather archive — for 2021 year
Nighttime: +16°C
Precipitation: 0.3 mm
Wind: 2 — 3 m/s
Humidity: 78%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +19°C | Sun hours | 13 h |
| UV index | 4 | Cloud cover (avg.) | 71% |
| Pressure (avg.) | 767 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +18°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +18°C | Wind chill (avg.) | +18°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 338° ↖ (NNW) |
Sunrise
07:15
Duration
13 h 50 min
Sunset
21:05
Moonrise
18:09
Moonset
01:59
Moon phase
Waxing Gibbous
Illumination
69%
+21°C
Weather archive — for 2020 year
Partly Cloudy
Weather archive — for 2020 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 2 — 2 m/s
Humidity: 80%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 14 h |
| UV index | 5 | Cloud cover (avg.) | 35% |
| 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.) | 5 m/s | Wind direction (avg.) | 112° ↗ (ENE) |
Sunrise
07:15
Duration
13 h 50 min
Sunset
21:05
Moonrise
06:04
Moonset
21:08
Moon phase
New Moon
Illumination
0%
Weather in Saint-Jean-de-Luz on 18 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+21°C
|
+18°C
|
+20°C | 2 h | 4 | 90% | 3 — 4 m/s |
| 2024 |
+20°C
|
+17°C
|
+19°C | 5 h | 4 | 84% | 3 — 4 m/s |
| 2023 |
+29°C
|
+20°C
|
+24°C | 14 h | 5 | 81% | 2 — 2 m/s |
| 2022 |
+19°C
|
+18°C
|
+19°C | 1 h | 4 | 89% | 6 — 6 m/s |
| 2021 |
+19°C
|
+16°C
|
+18°C | 13 h | 4 | 78% | 2 — 3 m/s |
| 2020 |
+24°C
|
+18°C
|
+21°C | 14 h | 5 | 80% | 2 — 2 m/s |