Click on a day for an hourly weather forecast
The temperatures in Castro Urdiales in March are quite cold with temperatures between 8°C and 13°C, warm clothes are a must.
You can expect rain for roughly half of the month of March in Castro Urdiales. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Castro Urdiales in March 2026.
If you’re planning to visit Castro Urdiales in the near future, we highly recommend that you review the 14 day weather forecast for Castro Urdiales before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 11° / 7° | 9 | 21 | 1 | 183 mm | Bad | Castro Urdiales in January |
| February | 11° / 7° | 9 | 18 | 1 | 171 mm | Bad | Castro Urdiales in February |
| March | 13° / 8° | 8 | 23 | 0 | 117 mm | Bad | Castro Urdiales in March |
| April | 15° / 9° | 8 | 23 | 0 | 113 mm | Ok | Castro Urdiales in April |
| May | 18° / 12° | 7 | 24 | 0 | 105 mm | Ok | Castro Urdiales in May |
| June | 21° / 14° | 6 | 24 | 0 | 111 mm | Good | Castro Urdiales in June |
| July | 23° / 17° | 4 | 27 | 0 | 69 mm | Perfect | Castro Urdiales in July |
| August | 24° / 17° | 3 | 28 | 0 | 67 mm | Perfect | Castro Urdiales in August |
| September | 22° / 16° | 4 | 26 | 0 | 78 mm | Good | Castro Urdiales in September |
| October | 20° / 14° | 5 | 26 | 0 | 107 mm | Good | Castro Urdiales in October |
| November | 15° / 10° | 9 | 21 | 0 | 206 mm | Ok | Castro Urdiales in November |
| December | 12° / 8° | 8 | 22 | 1 | 142 mm | Bad | Castro Urdiales in December |