Castro-Urdiales weather in July
In July, Castro-Urdiales sees average daytime highs of 22°C and overnight lows near 18°C, with 46 mm of rain across 9.1 wet days and about 14.9 hours of daylight. It is the 2nd-warmest and 12th-wettest month of the year here.
Highs climb over the month, from about 21°C in the first days to 22°C by the end. The sky is clear or mostly clear about 33% of the time in July, and the air most often feels humid.
Daylight stretches from about 15 h 12 min at the start of July to 14 h 30 min by month's end. Set against the rest of the year, July is Castro-Urdiales's 2nd-clearest and 11th-windiest month. For the whole year in context, see Castro-Urdiales's year-round climate.
- Daytime high
- 22°
- 2nd warmest
- Overnight low
- 18°
- 11th coldest
- Rainfall
- 46 mm
- 9.1 wet days
- Daylight
- 14 h 54 min
- 5:51 AM – 8:46 PM
- Cloud cover
- 54%
- 2nd clearest
- Wind
- 12 km/h
- 11th windiest
- Solar energy
- 6.01 kWh/m²
- Travel score
- 6.9
- out of 10
Castro-Urdiales is capital of Castro-Urdiales Municipality, Spain.
- Air quality
- Good
- PM10 15.1 µg/m³ · 2019
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in July
Highs climb over the month, from about 21°C in the first days to 22°C by the end.
A typical July day in Castro-Urdiales reaches about 22°C in the afternoon and slips back to 18°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 24°C. Set against its neighbours, July runs about 2°C warmer than June and about 1°C cooler than August.
| 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) | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 |
| Avg low (°C) | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 21 | 17 |
| 2 | 21 | 17 |
| 3 | 21 | 17 |
| 4 | 21 | 17 |
| 5 | 21 | 17 |
| 6 | 21 | 17 |
| 7 | 21 | 17 |
| 8 | 21 | 18 |
| 9 | 21 | 18 |
| 10 | 21 | 18 |
| 11 | 21 | 18 |
| 12 | 21 | 18 |
| 13 | 22 | 18 |
| 14 | 22 | 18 |
| 15 | 22 | 18 |
| 16 | 22 | 18 |
| 17 | 22 | 18 |
| 18 | 22 | 18 |
| 19 | 22 | 18 |
| 20 | 22 | 18 |
| 21 | 22 | 18 |
| 22 | 22 | 19 |
| 23 | 22 | 19 |
| 24 | 22 | 19 |
| 25 | 22 | 19 |
| 26 | 22 | 19 |
| 27 | 22 | 19 |
| 28 | 22 | 19 |
| 29 | 22 | 19 |
| 30 | 22 | 19 |
| 31 | 23 | 19 |
Castro-Urdiales weather by month
How July compares with the rest of the year at a glance. July is the 2nd-warmest and 12th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 12° / 9° | 119 | 15 | 9.2 | 2.9 |
| Feb | 12° / 8° | 103 | 13.5 | 10.2 | 2.9 |
| Mar | 14° / 10° | 98 | 13.2 | 11.6 | 3.7 |
| Apr | 15° / 11° | 89 | 13.8 | 13.2 | 4.0 |
| May | 17° / 13° | 69 | 12.7 | 14.5 | 5.1 |
| Jun | 20° / 16° | 56 | 9.9 | 15.2 | 6.2 |
| Jul | 22° / 18° | 46 | 9.1 | 14.9 | 6.9 |
| Aug | 23° / 19° | 49 | 9.4 | 13.8 | 7.0 |
| Sep | 21° / 17° | 66 | 10.9 | 12.3 | 6.4 |
| Oct | 19° / 15° | 103 | 13.8 | 10.8 | 5.5 |
| Nov | 15° / 12° | 152 | 16.1 | 9.5 | 3.9 |
| Dec | 13° / 10° | 117 | 14.9 | 8.8 | 3.3 |
Cloud cover in July
The sky is clear or mostly clear about 33% of the time in July.
Beyond those clear spells, partly cloudy skies cover about 22% of July, with mostly cloudy or overcast conditions the remaining 45%.
| 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 (%) | 51 | 51 | 52 | 51 | 51 | 52 | 52 | 53 | 53 | 54 | 55 | 55 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 55 | 56 | 55 | 56 | 56 | 56 | 56 | 56 | 57 |
| Cloudier (%) | 49 | 49 | 48 | 49 | 49 | 48 | 48 | 47 | 47 | 46 | 45 | 45 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 45 | 44 | 45 | 44 | 44 | 44 | 44 | 44 | 43 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 51 | 49 |
| 2 | 51 | 49 |
| 3 | 52 | 48 |
| 4 | 51 | 49 |
| 5 | 51 | 49 |
| 6 | 52 | 48 |
| 7 | 52 | 48 |
| 8 | 53 | 47 |
| 9 | 53 | 47 |
| 10 | 54 | 46 |
| 11 | 55 | 45 |
| 12 | 55 | 45 |
| 13 | 56 | 44 |
| 14 | 56 | 44 |
| 15 | 56 | 44 |
| 16 | 56 | 44 |
| 17 | 56 | 44 |
| 18 | 56 | 44 |
| 19 | 56 | 44 |
| 20 | 56 | 44 |
| 21 | 56 | 44 |
| 22 | 56 | 44 |
| 23 | 55 | 45 |
| 24 | 56 | 44 |
| 25 | 55 | 45 |
| 26 | 56 | 44 |
| 27 | 56 | 44 |
| 28 | 56 | 44 |
| 29 | 56 | 44 |
| 30 | 56 | 44 |
| 31 | 57 | 43 |
Chance of precipitation in July
Castro-Urdiales gets around 46 mm of rain over 9.1 wet days in July, the driest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 29% and peaks near 32% 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 (%) | 31 | 32 | 32 | 32 | 32 | 32 | 32 | 31 | 31 | 30 | 29 | 29 | 28 | 27 | 26 | 26 | 26 | 25 | 25 | 26 | 26 | 26 | 27 | 27 | 28 | 28 | 29 | 29 | 30 | 30 | 30 |
| Rain chance (%) | |
|---|---|
| 1 | 31 |
| 2 | 32 |
| 3 | 32 |
| 4 | 32 |
| 5 | 32 |
| 6 | 32 |
| 7 | 32 |
| 8 | 31 |
| 9 | 31 |
| 10 | 30 |
| 11 | 29 |
| 12 | 29 |
| 13 | 28 |
| 14 | 27 |
| 15 | 26 |
| 16 | 26 |
| 17 | 26 |
| 18 | 25 |
| 19 | 25 |
| 20 | 26 |
| 21 | 26 |
| 22 | 26 |
| 23 | 27 |
| 24 | 27 |
| 25 | 28 |
| 26 | 28 |
| 27 | 29 |
| 28 | 29 |
| 29 | 30 |
| 30 | 30 |
| 31 | 30 |
Humidity in July
Most of July feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, July lands in the humid band about 45% of days. Sticky, muggy-or-worse air turns up on roughly 14% 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 (%) | 17 | 17 | 16 | 16 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 11 | 11 | 10 | 9 | 9 | 8 | 7 | 6 | 6 | 5 | 5 | 4 | 4 | 3 | 3 | 3 | 3 | 3 |
| Comfortable (%) | 42 | 42 | 41 | 41 | 41 | 40 | 39 | 38 | 37 | 36 | 34 | 33 | 32 | 30 | 29 | 28 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 |
| Humid (%) | 36 | 36 | 36 | 37 | 37 | 38 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 46 | 47 | 48 | 48 | 49 | 49 | 50 | 50 | 50 | 51 | 51 | 52 | 50 | 50 | 50 | 50 |
| Muggy (%) | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 10 | 11 | 11 | 12 | 13 | 14 | 15 | 15 | 16 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 |
| Oppressive (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 17 | 42 | 36 | 5 | 0 |
| 2 | 17 | 42 | 36 | 5 | 0 |
| 3 | 16 | 41 | 36 | 6 | 0 |
| 4 | 16 | 41 | 37 | 6 | 0 |
| 5 | 16 | 41 | 37 | 7 | 0 |
| 6 | 15 | 40 | 38 | 7 | 0 |
| 7 | 15 | 39 | 38 | 8 | 0 |
| 8 | 14 | 38 | 39 | 8 | 0 |
| 9 | 14 | 37 | 40 | 9 | 0 |
| 10 | 13 | 36 | 41 | 10 | 0 |
| 11 | 13 | 34 | 42 | 11 | 1 |
| 12 | 12 | 33 | 43 | 11 | 1 |
| 13 | 12 | 32 | 44 | 12 | 1 |
| 14 | 11 | 30 | 45 | 13 | 1 |
| 15 | 11 | 29 | 46 | 14 | 1 |
| 16 | 10 | 28 | 46 | 15 | 1 |
| 17 | 9 | 27 | 47 | 15 | 1 |
| 18 | 9 | 27 | 48 | 16 | 1 |
| 19 | 8 | 26 | 48 | 17 | 1 |
| 20 | 7 | 26 | 49 | 17 | 1 |
| 21 | 6 | 26 | 49 | 17 | 1 |
| 22 | 6 | 26 | 50 | 18 | 1 |
| 23 | 5 | 26 | 50 | 18 | 1 |
| 24 | 5 | 26 | 50 | 18 | 1 |
| 25 | 4 | 26 | 51 | 18 | 1 |
| 26 | 4 | 26 | 51 | 18 | 1 |
| 27 | 3 | 26 | 52 | 18 | 1 |
| 28 | 3 | 27 | 50 | 19 | 1 |
| 29 | 3 | 27 | 50 | 19 | 1 |
| 30 | 3 | 27 | 50 | 19 | 1 |
| 31 | 3 | 27 | 50 | 19 | 1 |
Wind in July
Winds average 12 km/h in July.
Across July, daily wind ranges from about 12 km/h on the calmest days to 13 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) | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 13 | light breeze |
| 2 | 13 | light breeze |
| 3 | 13 | light breeze |
| 4 | 13 | light breeze |
| 5 | 13 | light breeze |
| 6 | 13 | light breeze |
| 7 | 13 | light breeze |
| 8 | 13 | light breeze |
| 9 | 13 | light breeze |
| 10 | 13 | light breeze |
| 11 | 13 | light breeze |
| 12 | 13 | light breeze |
| 13 | 13 | light breeze |
| 14 | 12 | light breeze |
| 15 | 12 | light breeze |
| 16 | 12 | light breeze |
| 17 | 12 | light breeze |
| 18 | 12 | light breeze |
| 19 | 12 | light breeze |
| 20 | 12 | light breeze |
| 21 | 12 | light breeze |
| 22 | 12 | light breeze |
| 23 | 12 | light breeze |
| 24 | 12 | light breeze |
| 25 | 12 | light breeze |
| 26 | 12 | calm |
| 27 | 12 | calm |
| 28 | 12 | calm |
| 29 | 12 | calm |
| 30 | 12 | calm |
| 31 | 12 | calm |
Sunrise & sunset in July
Daylight runs from about 15 h 12 min at the start of July to 14 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 42 minutes over July. Sunrise moves from 5:41 AM to 6:05 AM, and sunset from 8:52 PM to 8:33 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) | 15.2 | 15.2 | 15.2 | 15.2 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.0 | 15.0 | 15.0 | 15.0 | 14.9 | 14.9 | 14.9 | 14.9 | 14.8 | 14.8 | 14.8 | 14.8 | 14.7 | 14.7 | 14.7 | 14.6 | 14.6 | 14.6 | 14.5 | 14.5 | 14.5 |
| Sunrise (AM) | 5:41 | 5:41 | 5:42 | 5:42 | 5:43 | 5:43 | 5:44 | 5:45 | 5:45 | 5:46 | 5:47 | 5:48 | 5:48 | 5:49 | 5:50 | 5:51 | 5:52 | 5:53 | 5:53 | 5:54 | 5:55 | 5:56 | 5:57 | 5:58 | 5:59 | 6:00 | 6:01 | 6:02 | 6:03 | 6:04 | 6:05 |
| Sunset (PM) | 8:52 | 8:52 | 8:51 | 8:51 | 8:51 | 8:51 | 8:51 | 8:50 | 8:50 | 8:49 | 8:49 | 8:48 | 8:48 | 8:47 | 8:47 | 8:46 | 8:45 | 8:45 | 8:44 | 8:43 | 8:42 | 8:42 | 8:41 | 8:40 | 8:39 | 8:38 | 8:37 | 8:36 | 8:35 | 8:34 | 8:33 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 15.2 | 5:41 | 8:52 |
| 2 | 15.2 | 5:41 | 8:52 |
| 3 | 15.2 | 5:42 | 8:51 |
| 4 | 15.2 | 5:42 | 8:51 |
| 5 | 15.1 | 5:43 | 8:51 |
| 6 | 15.1 | 5:43 | 8:51 |
| 7 | 15.1 | 5:44 | 8:51 |
| 8 | 15.1 | 5:45 | 8:50 |
| 9 | 15.1 | 5:45 | 8:50 |
| 10 | 15.1 | 5:46 | 8:49 |
| 11 | 15.0 | 5:47 | 8:49 |
| 12 | 15.0 | 5:48 | 8:48 |
| 13 | 15.0 | 5:48 | 8:48 |
| 14 | 15.0 | 5:49 | 8:47 |
| 15 | 14.9 | 5:50 | 8:47 |
| 16 | 14.9 | 5:51 | 8:46 |
| 17 | 14.9 | 5:52 | 8:45 |
| 18 | 14.9 | 5:53 | 8:45 |
| 19 | 14.8 | 5:53 | 8:44 |
| 20 | 14.8 | 5:54 | 8:43 |
| 21 | 14.8 | 5:55 | 8:42 |
| 22 | 14.8 | 5:56 | 8:42 |
| 23 | 14.7 | 5:57 | 8:41 |
| 24 | 14.7 | 5:58 | 8:40 |
| 25 | 14.7 | 5:59 | 8:39 |
| 26 | 14.6 | 6:00 | 8:38 |
| 27 | 14.6 | 6:01 | 8:37 |
| 28 | 14.6 | 6:02 | 8:36 |
| 29 | 14.5 | 6:03 | 8:35 |
| 30 | 14.5 | 6:04 | 8:34 |
| 31 | 14.5 | 6:05 | 8:33 |
Solar energy in July
Average shortwave solar energy reaching the ground each day in July, about 6.01 kWh/m².
For context, solar energy here swings from a low near 1.4 kWh/m² to a high of 6.12 kWh/m² in June across the year — July's 6.01 kWh/m² sits near the top of that range.
| 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) | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 5.9 | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.1 | Intense |
| 2 | 6.1 | Intense |
| 3 | 6.1 | Intense |
| 4 | 6.1 | Intense |
| 5 | 6.1 | Intense |
| 6 | 6.1 | Intense |
| 7 | 6.1 | Intense |
| 8 | 6.1 | Intense |
| 9 | 6.1 | Intense |
| 10 | 6.1 | Intense |
| 11 | 6.1 | Intense |
| 12 | 6.1 | Intense |
| 13 | 6.1 | Intense |
| 14 | 6.1 | Intense |
| 15 | 6.1 | Intense |
| 16 | 6.1 | Intense |
| 17 | 6.1 | Intense |
| 18 | 6.1 | Intense |
| 19 | 6.1 | Intense |
| 20 | 6.1 | Intense |
| 21 | 6.0 | Intense |
| 22 | 6.0 | Intense |
| 23 | 6.0 | Intense |
| 24 | 6.0 | Bright |
| 25 | 6.0 | Bright |
| 26 | 5.9 | Bright |
| 27 | 5.9 | Bright |
| 28 | 5.9 | Bright |
| 29 | 5.8 | Bright |
| 30 | 5.8 | Bright |
| 31 | 5.8 | Bright |
Is July a good time to visit Castro-Urdiales?
Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
July is a reasonable time to visit Castro-Urdiales for sightseeing.
What to pack for Castro-Urdiales in July
From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In July, Castro-Urdiales sees daytime highs around 22°C and nights near 18°C. Pack sun protection. Worth having: rain gear. About 9 days see rain.
Sea temperature near Castro-Urdiales in July
The nearest coast averages about 21°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 22°C and coldest in February near 13°C.
It's comfortable for a long swim from Jul 11 to Sep 21 — 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) | 13 | 13 | 13 | 13 | 15 | 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 | 13 | Bracing |
| Feb | 13 | Bracing |
| Mar | 13 | Bracing |
| Apr | 13 | Bracing |
| May | 15 | 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 Castro-Urdiales in July
Clear-sky midday UV in July peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Castro-Urdiales peaks around July 15 at about 9 (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) | 2 | 2 | 5 | 6 | 6 | 8 | 9 | 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 | 2 | Low |
| Feb | 2 | Low |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 6 | High |
| Jun | 8 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 5 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Castro-Urdiales?
Castro-Urdiales sits at 43.4°N, 3.2°W, 18 m above sea level, in Spain. The nearest listed city is Santurtzi, 16 km away.
Topography around Castro-Urdiales
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Castro-Urdiales.
Within 3 km, the terrain around Castro-Urdiales has significant variations in elevation — a maximum elevation change of 455 m around an average of 60 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 851 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,676 m.
The land around Castro-Urdiales is covered by water (46%) and trees (30%) within 3 km, water (50%) and trees (35%) within 16 km, and trees (37%), water (35%) and grassland (20%) within 80 km.
Spain travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 65% of US
- price level, 2025
- GDP per capita
- $38,627
- 2025
- Happiness
- 6.5 / 10
- World Happiness, 2025
- Safe drinking water
- 99%
- of population, 2024
- Homicide rate
- 0.7
- per 100k, 2023
- Road deaths
- 3.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 540
- 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 Castro-Urdiales (43.3828°, -3.2204°, elevation 18 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).