Bayonne weather in August
In August, Bayonne sees average daytime highs of 24°C and overnight lows near 18°C, with 65 mm of rain across 10.2 wet days and about 13.8 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.
Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 36% of the time in August, and the air most often feels humid.
Daylight stretches from about 14 h 24 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is Bayonne's 1st-clearest and 12th-windiest month. For the whole year in context, see Bayonne's year-round climate.
- Daytime high
- 24°
- 1st warmest
- Overnight low
- 18°
- 12th coldest
- Rainfall
- 65 mm
- 10.2 wet days
- Daylight
- 13 h 48 min
- 6:16 AM – 8:04 PM
- Cloud cover
- 51%
- 1st clearest
- Wind
- 10 km/h
- 12th windiest
- Solar energy
- 5.36 kWh/m²
- Travel score
- 7.2
- out of 10
- Air quality
- Moderate
- PM2.5 11.5 µg/m³ · 2015
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in August
Day-to-day highs hold fairly steady near 24°C through the month.
A typical August day in Bayonne reaches about 24°C in the afternoon and slips back to 18°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 29°C. Set against its neighbours, August runs about 1°C warmer than July and about 2°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) | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 23 |
| Avg low (°C) | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 17 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 24 | 19 |
| 2 | 24 | 19 |
| 3 | 24 | 19 |
| 4 | 24 | 19 |
| 5 | 24 | 18 |
| 6 | 24 | 18 |
| 7 | 24 | 18 |
| 8 | 24 | 18 |
| 9 | 24 | 18 |
| 10 | 24 | 18 |
| 11 | 24 | 18 |
| 12 | 24 | 18 |
| 13 | 24 | 18 |
| 14 | 24 | 18 |
| 15 | 24 | 18 |
| 16 | 24 | 18 |
| 17 | 24 | 18 |
| 18 | 24 | 18 |
| 19 | 24 | 18 |
| 20 | 24 | 18 |
| 21 | 24 | 18 |
| 22 | 24 | 18 |
| 23 | 24 | 18 |
| 24 | 24 | 18 |
| 25 | 24 | 18 |
| 26 | 24 | 18 |
| 27 | 24 | 18 |
| 28 | 24 | 18 |
| 29 | 24 | 18 |
| 30 | 24 | 18 |
| 31 | 23 | 17 |
Bayonne weather by month
How August compares with the rest of the year at a glance. August is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 12° / 7° | 123 | 14.1 | 9.1 | 2.7 |
| Feb | 12° / 7° | 106 | 12.7 | 10.2 | 2.9 |
| Mar | 14° / 8° | 98 | 12.8 | 11.6 | 4.0 |
| Apr | 16° / 10° | 106 | 14.2 | 13.2 | 4.4 |
| May | 19° / 13° | 96 | 13.1 | 14.5 | 5.6 |
| Jun | 21° / 16° | 76 | 10.7 | 15.2 | 6.4 |
| Jul | 23° / 18° | 64 | 10.3 | 14.9 | 7.0 |
| Aug | 24° / 18° | 65 | 10.2 | 13.8 | 7.2 |
| Sep | 22° / 16° | 88 | 11.4 | 12.3 | 6.5 |
| Oct | 19° / 14° | 114 | 12.8 | 10.8 | 5.7 |
| Nov | 15° / 10° | 162 | 14.9 | 9.5 | 3.9 |
| Dec | 12° / 8° | 134 | 14.1 | 8.8 | 3.0 |
Cloud cover in August
The sky is clear or mostly clear about 36% of the time in August, the clearest month of the year.
Beyond those clear spells, partly cloudy skies cover about 23% of August, with mostly cloudy or overcast conditions the remaining 41%.
| 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 (%) | 59 | 59 | 59 | 60 | 60 | 61 | 61 | 61 | 61 | 61 | 61 | 60 | 60 | 60 | 59 | 59 | 58 | 58 | 58 | 57 | 57 | 57 | 56 | 56 | 56 | 56 | 57 | 57 | 57 | 58 | 58 |
| Cloudier (%) | 41 | 41 | 41 | 40 | 40 | 39 | 39 | 39 | 39 | 39 | 39 | 40 | 40 | 40 | 41 | 41 | 42 | 42 | 42 | 43 | 43 | 43 | 44 | 44 | 44 | 44 | 43 | 43 | 43 | 42 | 42 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 59 | 41 |
| 2 | 59 | 41 |
| 3 | 59 | 41 |
| 4 | 60 | 40 |
| 5 | 60 | 40 |
| 6 | 61 | 39 |
| 7 | 61 | 39 |
| 8 | 61 | 39 |
| 9 | 61 | 39 |
| 10 | 61 | 39 |
| 11 | 61 | 39 |
| 12 | 60 | 40 |
| 13 | 60 | 40 |
| 14 | 60 | 40 |
| 15 | 59 | 41 |
| 16 | 59 | 41 |
| 17 | 58 | 42 |
| 18 | 58 | 42 |
| 19 | 58 | 42 |
| 20 | 57 | 43 |
| 21 | 57 | 43 |
| 22 | 57 | 43 |
| 23 | 56 | 44 |
| 24 | 56 | 44 |
| 25 | 56 | 44 |
| 26 | 56 | 44 |
| 27 | 57 | 43 |
| 28 | 57 | 43 |
| 29 | 57 | 43 |
| 30 | 58 | 42 |
| 31 | 58 | 42 |
Chance of precipitation in August
Bayonne gets around 65 mm of rain over 10.2 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 32% and peaks near 36% 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 (%) | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 32 | 33 | 33 | 34 | 34 | 35 | 35 | 35 | 36 | 36 | 36 | 36 |
| Rain chance (%) | |
|---|---|
| 1 | 30 |
| 2 | 30 |
| 3 | 31 |
| 4 | 31 |
| 5 | 31 |
| 6 | 31 |
| 7 | 31 |
| 8 | 31 |
| 9 | 31 |
| 10 | 31 |
| 11 | 31 |
| 12 | 31 |
| 13 | 31 |
| 14 | 31 |
| 15 | 31 |
| 16 | 31 |
| 17 | 31 |
| 18 | 31 |
| 19 | 31 |
| 20 | 32 |
| 21 | 33 |
| 22 | 33 |
| 23 | 34 |
| 24 | 34 |
| 25 | 35 |
| 26 | 35 |
| 27 | 35 |
| 28 | 36 |
| 29 | 36 |
| 30 | 36 |
| 31 | 36 |
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 43% of days. Sticky, muggy-or-worse air turns up on roughly 34% 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 (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 |
| Comfortable (%) | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 22 | 23 | 24 | 25 | 25 | 26 | 27 | 28 |
| Humid (%) | 49 | 49 | 49 | 48 | 48 | 47 | 47 | 46 | 46 | 46 | 45 | 45 | 44 | 44 | 44 | 43 | 43 | 43 | 42 | 42 | 42 | 41 | 41 | 40 | 40 | 40 | 39 | 39 | 39 | 39 | 38 |
| Muggy (%) | 31 | 31 | 31 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 32 | 32 | 33 | 33 | 33 | 33 | 34 | 34 | 33 | 33 | 32 | 31 | 30 | 29 | 28 | 27 | 26 | 25 |
| Oppressive (%) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 1 | 16 | 49 | 31 | 4 |
| 2 | 1 | 16 | 49 | 31 | 4 |
| 3 | 1 | 16 | 49 | 31 | 4 |
| 4 | 1 | 16 | 48 | 30 | 4 |
| 5 | 1 | 17 | 48 | 30 | 4 |
| 6 | 1 | 17 | 47 | 30 | 4 |
| 7 | 1 | 17 | 47 | 31 | 4 |
| 8 | 1 | 18 | 46 | 31 | 4 |
| 9 | 1 | 18 | 46 | 31 | 4 |
| 10 | 1 | 18 | 46 | 31 | 4 |
| 11 | 1 | 18 | 45 | 32 | 4 |
| 12 | 1 | 19 | 45 | 32 | 3 |
| 13 | 1 | 19 | 44 | 32 | 3 |
| 14 | 1 | 19 | 44 | 32 | 3 |
| 15 | 1 | 20 | 44 | 32 | 3 |
| 16 | 1 | 20 | 43 | 33 | 3 |
| 17 | 1 | 20 | 43 | 33 | 3 |
| 18 | 1 | 20 | 43 | 33 | 3 |
| 19 | 1 | 20 | 42 | 33 | 3 |
| 20 | 2 | 20 | 42 | 34 | 3 |
| 21 | 2 | 20 | 42 | 34 | 3 |
| 22 | 2 | 21 | 41 | 33 | 3 |
| 23 | 2 | 21 | 41 | 33 | 3 |
| 24 | 3 | 22 | 40 | 32 | 3 |
| 25 | 3 | 23 | 40 | 31 | 3 |
| 26 | 4 | 24 | 40 | 30 | 3 |
| 27 | 4 | 25 | 39 | 29 | 3 |
| 28 | 5 | 25 | 39 | 28 | 3 |
| 29 | 5 | 26 | 39 | 27 | 3 |
| 30 | 6 | 27 | 39 | 26 | 3 |
| 31 | 6 | 28 | 38 | 25 | 2 |
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 24 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 78 minutes over August. Sunrise moves from 5:59 AM to 6:33 AM, and sunset from 8:25 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) | 14.4 | 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 | 13.8 | 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 | 13.1 |
| Sunrise (AM) | 5:59 | 6:00 | 6:01 | 6:02 | 6:03 | 6:05 | 6:06 | 6:07 | 6:08 | 6:09 | 6:10 | 6:11 | 6:12 | 6:14 | 6:15 | 6:16 | 6:17 | 6:18 | 6:19 | 6:20 | 6:22 | 6:23 | 6:24 | 6:25 | 6:26 | 6:27 | 6:28 | 6:30 | 6:31 | 6:32 | 6:33 |
| Sunset (PM) | 8:25 | 8:24 | 8:22 | 8:21 | 8:20 | 8:19 | 8:17 | 8:16 | 8:14 | 8:13 | 8:12 | 8:10 | 8:09 | 8:07 | 8:06 | 8:04 | 8:03 | 8:01 | 7:59 | 7:58 | 7:56 | 7:54 | 7:53 | 7:51 | 7:49 | 7:48 | 7:46 | 7:44 | 7:42 | 7:41 | 7:39 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.4 | 5:59 | 8:25 |
| 2 | 14.4 | 6:00 | 8:24 |
| 3 | 14.4 | 6:01 | 8:22 |
| 4 | 14.3 | 6:02 | 8:21 |
| 5 | 14.3 | 6:03 | 8:20 |
| 6 | 14.2 | 6:05 | 8:19 |
| 7 | 14.2 | 6:06 | 8:17 |
| 8 | 14.2 | 6:07 | 8:16 |
| 9 | 14.1 | 6:08 | 8:14 |
| 10 | 14.1 | 6:09 | 8:13 |
| 11 | 14.0 | 6:10 | 8:12 |
| 12 | 14.0 | 6:11 | 8:10 |
| 13 | 13.9 | 6:12 | 8:09 |
| 14 | 13.9 | 6:14 | 8:07 |
| 15 | 13.8 | 6:15 | 8:06 |
| 16 | 13.8 | 6:16 | 8:04 |
| 17 | 13.8 | 6:17 | 8:03 |
| 18 | 13.7 | 6:18 | 8:01 |
| 19 | 13.7 | 6:19 | 7:59 |
| 20 | 13.6 | 6:20 | 7:58 |
| 21 | 13.6 | 6:22 | 7:56 |
| 22 | 13.5 | 6:23 | 7:54 |
| 23 | 13.5 | 6:24 | 7:53 |
| 24 | 13.4 | 6:25 | 7:51 |
| 25 | 13.4 | 6:26 | 7:49 |
| 26 | 13.3 | 6:27 | 7:48 |
| 27 | 13.3 | 6:28 | 7:46 |
| 28 | 13.2 | 6:30 | 7:44 |
| 29 | 13.2 | 6:31 | 7:42 |
| 30 | 13.1 | 6:32 | 7:41 |
| 31 | 13.1 | 6:33 | 7:39 |
Solar energy in August
Average shortwave solar energy reaching the ground each day in August, about 5.36 kWh/m².
For context, solar energy here swings from a low near 1.38 kWh/m² to a high of 6.08 kWh/m² in June across the year — August's 5.36 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) | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.4 | 5.4 | 5.3 | 5.3 | 5.3 | 5.3 | 5.2 | 5.2 | 5.1 | 5.1 | 5.1 | 5.0 | 5.0 | 5.0 | 5.0 | 4.9 |
| 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 | 5.7 | Bright |
| 2 | 5.7 | Bright |
| 3 | 5.7 | Bright |
| 4 | 5.7 | Bright |
| 5 | 5.7 | Bright |
| 6 | 5.6 | Bright |
| 7 | 5.6 | Bright |
| 8 | 5.6 | Bright |
| 9 | 5.6 | Bright |
| 10 | 5.6 | Bright |
| 11 | 5.5 | Bright |
| 12 | 5.5 | Bright |
| 13 | 5.5 | Bright |
| 14 | 5.5 | Bright |
| 15 | 5.5 | Bright |
| 16 | 5.4 | Bright |
| 17 | 5.4 | Bright |
| 18 | 5.3 | Bright |
| 19 | 5.3 | Bright |
| 20 | 5.3 | Bright |
| 21 | 5.3 | Bright |
| 22 | 5.2 | Bright |
| 23 | 5.2 | Bright |
| 24 | 5.1 | Bright |
| 25 | 5.1 | Bright |
| 26 | 5.1 | Bright |
| 27 | 5.0 | Bright |
| 28 | 5.0 | Bright |
| 29 | 5.0 | Bright |
| 30 | 5.0 | Bright |
| 31 | 4.9 | Bright |
Is August a good time to visit Bayonne?
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 Bayonne for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Bayonne in August
From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In August, Bayonne sees daytime highs around 24°C and nights near 18°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.
Sea temperature near Bayonne 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 19 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 1 to Sep 24 — about 2.8 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 13 | 12 | 12 | 14 | 16 | 19 | 21 | 22 | 21 | 18 | 16 | 14 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Refreshing | Refreshing | Cool | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 13 | Bracing |
| Feb | 12 | Bracing |
| Mar | 12 | Bracing |
| Apr | 14 | Bracing |
| May | 16 | Cool |
| Jun | 19 | Cool |
| Jul | 21 | Refreshing |
| Aug | 22 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 18 | Cool |
| Nov | 16 | Cool |
| Dec | 14 | Bracing |
UV index in Bayonne in August
Clear-sky midday UV in August peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Bayonne peaks around July 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 | 8 | 8 | 8 | 5 | 4 | 2 | 1 |
| Level | Low | Low | Moderate | High | High | Very high | Very high | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 6 | High |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 8 | Very high |
| Sep | 5 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Bayonne in August
Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.
Air quality in Bayonne is worst in February — around 18 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 8 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Bayonne's WHO annual average of 11.5 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 11 | 18 | 17 | 14 | 10 | 11 | 10 | 10 | 10 | 10 | 8 | 9 |
| Level | Good | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 18 | Moderate |
| Mar | 17 | Moderate |
| Apr | 14 | Moderate |
| May | 10 | Good |
| Jun | 11 | Good |
| Jul | 10 | Good |
| Aug | 10 | Good |
| Sep | 10 | Good |
| Oct | 10 | Good |
| Nov | 8 | Good |
| Dec | 9 | Good |
Where is Bayonne?
Bayonne sits at 43.5°N, 1.5°W, 6 m above sea level, in France. The nearest listed city is Anglet, 4.0 km away.
Topography around Bayonne
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bayonne.
Within 3 km, the terrain around Bayonne has only modest variations in elevation — a maximum elevation change of 58 m around an average of 19 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 188 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,044 m.
The land around Bayonne is covered by trees (40%) and artificial surfaces (39%) within 3 km, trees (40%) and water (30%) within 16 km, and trees (47%) and water (24%) 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 Bayonne (43.4932°, -1.473°, elevation 6 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).