Gujan-Mestras weather in August
In August, Gujan-Mestras sees average daytime highs of 26°C and overnight lows near 18°C, with 53 mm of rain across 8 wet days and about 13.9 hours of daylight. It is the 1st-warmest and 10th-wettest month of the year here.
Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 42% of the time in August, and the air most often feels humid.
Daylight stretches from about 14 h 30 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is Gujan-Mestras's 1st-clearest and 12th-windiest month. For the whole year in context, see Gujan-Mestras's year-round climate.
- Daytime high
- 26°
- 1st warmest
- Overnight low
- 18°
- 12th coldest
- Rainfall
- 53 mm
- 8 wet days
- Daylight
- 13 h 54 min
- 6:12 AM – 8:05 PM
- Cloud cover
- 46%
- 1st clearest
- Wind
- 10 km/h
- 12th windiest
- Solar energy
- 5.52 kWh/m²
- Travel score
- 7.3
- out of 10
Temperature in August
Day-to-day highs hold fairly steady near 26°C through the month.
A typical August day in Gujan-Mestras reaches about 26°C in the afternoon and slips back to 18°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 31°C. Set against its neighbours, August runs on par with July and about 3°C warmer than September.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg low (°C) | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 26 | 18 |
| 2 | 26 | 18 |
| 3 | 26 | 18 |
| 4 | 26 | 18 |
| 5 | 26 | 18 |
| 6 | 26 | 18 |
| 7 | 26 | 18 |
| 8 | 26 | 18 |
| 9 | 26 | 18 |
| 10 | 26 | 18 |
| 11 | 26 | 18 |
| 12 | 26 | 18 |
| 13 | 26 | 18 |
| 14 | 26 | 18 |
| 15 | 26 | 18 |
| 16 | 26 | 18 |
| 17 | 26 | 18 |
| 18 | 26 | 18 |
| 19 | 26 | 18 |
| 20 | 26 | 18 |
| 21 | 26 | 17 |
| 22 | 26 | 17 |
| 23 | 26 | 17 |
| 24 | 26 | 17 |
| 25 | 25 | 17 |
| 26 | 25 | 17 |
| 27 | 25 | 17 |
| 28 | 25 | 17 |
| 29 | 25 | 17 |
| 30 | 25 | 17 |
| 31 | 25 | 17 |
Gujan-Mestras weather by month
How August compares with the rest of the year at a glance. August is the 1st-warmest and 10th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 10° / 5° | 72 | 11.5 | 9 | 2.3 |
| Feb | 11° / 5° | 52 | 9.4 | 10.1 | 2.8 |
| Mar | 14° / 7° | 54 | 10.7 | 11.6 | 4.2 |
| Apr | 17° / 9° | 66 | 12 | 13.2 | 5.0 |
| May | 20° / 13° | 70 | 11.6 | 14.6 | 6.0 |
| Jun | 23° / 16° | 63 | 9.3 | 15.3 | 7.0 |
| Jul | 25° / 18° | 46 | 7.8 | 15 | 7.3 |
| Aug | 26° / 18° | 53 | 8 | 13.9 | 7.3 |
| Sep | 23° / 15° | 63 | 9 | 12.3 | 7.0 |
| Oct | 19° / 12° | 73 | 10.6 | 10.7 | 5.9 |
| Nov | 14° / 8° | 88 | 12.5 | 9.4 | 3.7 |
| Dec | 11° / 6° | 77 | 11.8 | 8.7 | 2.6 |
Cloud cover in August
The sky is clear or mostly clear about 42% of the time in August, the clearest month of the year.
Beyond those clear spells, partly cloudy skies cover about 22% of August, with mostly cloudy or overcast conditions the remaining 36%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 65 | 65 | 65 | 64 | 64 | 64 | 63 | 62 | 62 | 62 | 61 | 61 | 61 | 62 | 61 |
| Cloudier (%) | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 35 | 35 | 35 | 36 | 36 | 36 | 37 | 38 | 38 | 38 | 39 | 39 | 39 | 38 | 39 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 66 | 34 |
| 2 | 66 | 34 |
| 3 | 66 | 34 |
| 4 | 66 | 34 |
| 5 | 66 | 34 |
| 6 | 66 | 34 |
| 7 | 66 | 34 |
| 8 | 66 | 34 |
| 9 | 66 | 34 |
| 10 | 66 | 34 |
| 11 | 66 | 34 |
| 12 | 66 | 34 |
| 13 | 66 | 34 |
| 14 | 66 | 34 |
| 15 | 66 | 34 |
| 16 | 66 | 34 |
| 17 | 65 | 35 |
| 18 | 65 | 35 |
| 19 | 65 | 35 |
| 20 | 64 | 36 |
| 21 | 64 | 36 |
| 22 | 64 | 36 |
| 23 | 63 | 37 |
| 24 | 62 | 38 |
| 25 | 62 | 38 |
| 26 | 62 | 38 |
| 27 | 61 | 39 |
| 28 | 61 | 39 |
| 29 | 61 | 39 |
| 30 | 62 | 38 |
| 31 | 61 | 39 |
Chance of precipitation in August
Gujan-Mestras gets around 53 mm of rain over 8 wet days in August. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 25% and peaks near 26% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Rain chance (%) | |
|---|---|
| 1 | 25 |
| 2 | 25 |
| 3 | 25 |
| 4 | 26 |
| 5 | 26 |
| 6 | 26 |
| 7 | 26 |
| 8 | 26 |
| 9 | 26 |
| 10 | 26 |
| 11 | 26 |
| 12 | 25 |
| 13 | 25 |
| 14 | 25 |
| 15 | 24 |
| 16 | 24 |
| 17 | 24 |
| 18 | 24 |
| 19 | 24 |
| 20 | 24 |
| 21 | 24 |
| 22 | 24 |
| 23 | 24 |
| 24 | 25 |
| 25 | 25 |
| 26 | 25 |
| 27 | 25 |
| 28 | 25 |
| 29 | 25 |
| 30 | 25 |
| 31 | 25 |
Humidity in August
Most of August feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, August lands in the humid band about 38% of days. Sticky, muggy-or-worse air turns up on roughly 17% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 11 | 12 | 13 | 15 | 16 | 17 | 18 | 20 | 21 |
| Comfortable (%) | 31 | 32 | 32 | 33 | 33 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 35 | 35 | 36 | 36 | 37 | 37 |
| Humid (%) | 45 | 44 | 43 | 42 | 41 | 40 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 40 | 40 | 40 | 40 | 40 | 40 | 39 | 38 | 37 | 36 | 35 | 34 | 32 | 31 | 30 | 29 |
| Muggy (%) | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 13 | 13 |
| Oppressive (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 7 | 31 | 45 | 16 | 1 |
| 2 | 7 | 32 | 44 | 17 | 1 |
| 3 | 7 | 32 | 43 | 17 | 1 |
| 4 | 7 | 33 | 42 | 17 | 1 |
| 5 | 8 | 33 | 41 | 17 | 1 |
| 6 | 8 | 34 | 40 | 17 | 1 |
| 7 | 8 | 34 | 39 | 17 | 1 |
| 8 | 8 | 34 | 39 | 17 | 1 |
| 9 | 9 | 34 | 39 | 17 | 1 |
| 10 | 9 | 34 | 39 | 17 | 1 |
| 11 | 9 | 34 | 39 | 17 | 2 |
| 12 | 9 | 34 | 39 | 17 | 2 |
| 13 | 9 | 34 | 39 | 17 | 1 |
| 14 | 9 | 34 | 39 | 16 | 1 |
| 15 | 9 | 34 | 39 | 16 | 1 |
| 16 | 9 | 34 | 40 | 16 | 1 |
| 17 | 9 | 34 | 40 | 16 | 1 |
| 18 | 9 | 34 | 40 | 16 | 1 |
| 19 | 9 | 34 | 40 | 16 | 1 |
| 20 | 9 | 34 | 40 | 16 | 1 |
| 21 | 9 | 34 | 40 | 16 | 1 |
| 22 | 10 | 34 | 39 | 16 | 1 |
| 23 | 11 | 34 | 38 | 16 | 1 |
| 24 | 12 | 34 | 37 | 16 | 1 |
| 25 | 13 | 34 | 36 | 15 | 1 |
| 26 | 15 | 35 | 35 | 15 | 1 |
| 27 | 16 | 35 | 34 | 15 | 1 |
| 28 | 17 | 36 | 32 | 14 | 1 |
| 29 | 18 | 36 | 31 | 14 | 1 |
| 30 | 20 | 37 | 30 | 13 | 1 |
| 31 | 21 | 37 | 29 | 13 | 0 |
Wind in August
Winds average 10 km/h in August, the calmest month.
Across August, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 10 | calm |
| 2 | 10 | calm |
| 3 | 10 | calm |
| 4 | 10 | calm |
| 5 | 10 | calm |
| 6 | 10 | calm |
| 7 | 10 | calm |
| 8 | 10 | calm |
| 9 | 10 | calm |
| 10 | 10 | calm |
| 11 | 10 | calm |
| 12 | 10 | calm |
| 13 | 10 | calm |
| 14 | 10 | calm |
| 15 | 10 | calm |
| 16 | 10 | calm |
| 17 | 10 | calm |
| 18 | 10 | calm |
| 19 | 10 | calm |
| 20 | 10 | calm |
| 21 | 10 | calm |
| 22 | 10 | calm |
| 23 | 10 | calm |
| 24 | 10 | calm |
| 25 | 10 | calm |
| 26 | 10 | calm |
| 27 | 10 | calm |
| 28 | 10 | calm |
| 29 | 10 | calm |
| 30 | 10 | calm |
| 31 | 10 | calm |
Sunrise & sunset in August
Daylight runs from about 14 h 30 min at the start of August to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 84 minutes over August. Sunrise moves from 5:54 AM to 6:30 AM, and sunset from 8:26 PM to 7:39 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.5 | 14.5 | 14.5 | 14.4 | 14.4 | 14.3 | 14.3 | 14.2 | 14.2 | 14.2 | 14.1 | 14.1 | 14.0 | 14.0 | 13.9 | 13.9 | 13.8 | 13.8 | 13.7 | 13.7 | 13.6 | 13.6 | 13.5 | 13.5 | 13.4 | 13.4 | 13.3 | 13.3 | 13.2 | 13.2 | 13.1 |
| Sunrise (AM) | 5:54 | 5:56 | 5:57 | 5:58 | 5:59 | 6:00 | 6:01 | 6:02 | 6:04 | 6:05 | 6:06 | 6:07 | 6:08 | 6:10 | 6:11 | 6:12 | 6:13 | 6:14 | 6:16 | 6:17 | 6:18 | 6:19 | 6:20 | 6:22 | 6:23 | 6:24 | 6:25 | 6:26 | 6:28 | 6:29 | 6:30 |
| Sunset (PM) | 8:26 | 8:25 | 8:24 | 8:22 | 8:21 | 8:20 | 8:18 | 8:17 | 8:15 | 8:14 | 8:13 | 8:11 | 8:10 | 8:08 | 8:06 | 8:05 | 8:03 | 8:01 | 8:00 | 7:58 | 7:56 | 7:55 | 7:53 | 7:51 | 7:49 | 7:48 | 7:46 | 7:44 | 7:42 | 7:40 | 7:39 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.5 | 5:54 | 8:26 |
| 2 | 14.5 | 5:56 | 8:25 |
| 3 | 14.5 | 5:57 | 8:24 |
| 4 | 14.4 | 5:58 | 8:22 |
| 5 | 14.4 | 5:59 | 8:21 |
| 6 | 14.3 | 6:00 | 8:20 |
| 7 | 14.3 | 6:01 | 8:18 |
| 8 | 14.2 | 6:02 | 8:17 |
| 9 | 14.2 | 6:04 | 8:15 |
| 10 | 14.2 | 6:05 | 8:14 |
| 11 | 14.1 | 6:06 | 8:13 |
| 12 | 14.1 | 6:07 | 8:11 |
| 13 | 14.0 | 6:08 | 8:10 |
| 14 | 14.0 | 6:10 | 8:08 |
| 15 | 13.9 | 6:11 | 8:06 |
| 16 | 13.9 | 6:12 | 8:05 |
| 17 | 13.8 | 6:13 | 8:03 |
| 18 | 13.8 | 6:14 | 8:01 |
| 19 | 13.7 | 6:16 | 8:00 |
| 20 | 13.7 | 6:17 | 7:58 |
| 21 | 13.6 | 6:18 | 7:56 |
| 22 | 13.6 | 6:19 | 7:55 |
| 23 | 13.5 | 6:20 | 7:53 |
| 24 | 13.5 | 6:22 | 7:51 |
| 25 | 13.4 | 6:23 | 7:49 |
| 26 | 13.4 | 6:24 | 7:48 |
| 27 | 13.3 | 6:25 | 7:46 |
| 28 | 13.3 | 6:26 | 7:44 |
| 29 | 13.2 | 6:28 | 7:42 |
| 30 | 13.2 | 6:29 | 7:40 |
| 31 | 13.1 | 6:30 | 7:39 |
Solar energy in August
Average shortwave solar energy reaching the ground each day in August, about 5.52 kWh/m².
For context, solar energy here swings from a low near 1.25 kWh/m² to a high of 6.27 kWh/m² in June across the year — August's 5.52 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.9 | 5.9 | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 | 5.8 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.6 | 5.6 | 5.6 | 5.5 | 5.5 | 5.5 | 5.4 | 5.4 | 5.3 | 5.3 | 5.3 | 5.2 | 5.2 | 5.2 | 5.1 | 5.1 | 5.0 | 5.0 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.9 | Bright |
| 2 | 5.9 | Bright |
| 3 | 5.9 | Bright |
| 4 | 5.9 | Bright |
| 5 | 5.8 | Bright |
| 6 | 5.8 | Bright |
| 7 | 5.8 | Bright |
| 8 | 5.8 | Bright |
| 9 | 5.7 | Bright |
| 10 | 5.7 | Bright |
| 11 | 5.7 | Bright |
| 12 | 5.7 | Bright |
| 13 | 5.7 | Bright |
| 14 | 5.6 | Bright |
| 15 | 5.6 | Bright |
| 16 | 5.6 | Bright |
| 17 | 5.5 | Bright |
| 18 | 5.5 | Bright |
| 19 | 5.5 | Bright |
| 20 | 5.4 | Bright |
| 21 | 5.4 | Bright |
| 22 | 5.3 | Bright |
| 23 | 5.3 | Bright |
| 24 | 5.3 | Bright |
| 25 | 5.2 | Bright |
| 26 | 5.2 | Bright |
| 27 | 5.2 | Bright |
| 28 | 5.1 | Bright |
| 29 | 5.1 | Bright |
| 30 | 5.0 | Bright |
| 31 | 5.0 | Bright |
Is August a good time to visit Gujan-Mestras?
Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
August is one of the better times to visit Gujan-Mestras for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Gujan-Mestras in August
From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In August, Gujan-Mestras sees daytime highs around 26°C and nights near 18°C. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.
Sea temperature near Gujan-Mestras in August
The nearest coast averages about 22°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 24 km away) is warmest in August at about 22°C and coldest in February near 12°C.
It's comfortable for a long swim from Jul 7 to Sep 18 — about 2.4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 12 | 12 | 12 | 13 | 16 | 18 | 21 | 22 | 20 | 18 | 16 | 14 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Refreshing | Refreshing | Cool | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 12 | Bracing |
| Feb | 12 | Bracing |
| Mar | 12 | Bracing |
| Apr | 13 | Bracing |
| May | 16 | Cool |
| Jun | 18 | Cool |
| Jul | 21 | Refreshing |
| Aug | 22 | Refreshing |
| Sep | 20 | Refreshing |
| Oct | 18 | Cool |
| Nov | 16 | Cool |
| Dec | 14 | Bracing |
UV index in Gujan-Mestras in August
Clear-sky midday UV in August peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Gujan-Mestras peaks around July 18 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 6 | 6 | 7 | 8 | 7 | 5 | 3 | 2 | 1 |
| Level | Low | Low | Moderate | High | High | Very high | Very high | Very high | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 6 | High |
| Jun | 7 | Very high |
| Jul | 8 | Very high |
| Aug | 7 | Very high |
| Sep | 5 | Moderate |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Gujan-Mestras?
Gujan-Mestras sits at 44.6°N, 1.1°W, 5 m above sea level, in France. The nearest listed city is La Teste-de-Buch, 6.0 km away.
Topography around Gujan-Mestras
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Gujan-Mestras.
Within 3 km, the terrain around Gujan-Mestras has only modest variations in elevation — a maximum elevation change of 26 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 96 m; within 80 km, only modest variations in elevation — a maximum elevation change of 149 m.
The land around Gujan-Mestras is covered by water (28%), trees (27%) and artificial surfaces (27%) within 3 km, trees (49%) and water (23%) within 16 km, and trees (44%), water (26%) and grassland (20%) within 80 km.
France travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E
- 230 V · 50 Hz
- Prices
- ≈ 77% of US
- price level, 2025
- GDP per capita
- $48,986
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.3
- per 100k, 2023
- Road deaths
- 5.1
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 539
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Gujan-Mestras (44.636°, -1.0681°, elevation 5 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).