Sestao in Spring
In spring (March, April and May), Sestao sees average daytime highs around 15°C and overnight lows near 9°C, with 278 mm of precipitation over about 43 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 12°C in early March to 18°C by late May. The sky is clear or mostly clear about 20% of the time across spring, and the air most often feels dry.
Spring is Sestao's 3rd-best season to visit on our travel score. For the whole year in context, see Sestao's year-round climate.
- Avg daytime high
- 15°C
- 3rd-warmest season
- Avg overnight low
- 9°C
- Precipitation
- 278 mm
- 43 wet days
- Avg wind
- 12 km/h
- Travel score
- 4.1
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Sestao in Spring
Over the season highs climb from about 12°C in early March to 18°C by late May.
A typical spring day in Sestao reaches about 15°C and drops to 9°C overnight. The warmest of the three months is May, the coolest March.
Sestao weather by month
How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 11° / 6° | 112 | 14.8 | 1 | 9.2 | 2.4 |
| Feb | 12° / 6° | 100 | 13.6 | 1.5 | 10.2 | 2.6 |
| Mar | 13° / 7° | 98 | 13.5 | 0.6 | 11.6 | 3.5 |
| Apr | 15° / 9° | 97 | 15.2 | 0 | 13.2 | 3.8 |
| May | 17° / 11° | 84 | 14.2 | 0 | 14.5 | 5.0 |
| Jun | 20° / 14° | 69 | 11.4 | 0 | 15.1 | 6.0 |
| Jul | 22° / 16° | 60 | 10.4 | 0 | 14.9 | 6.6 |
| Aug | 23° / 16° | 55 | 10.3 | 0 | 13.8 | 6.8 |
| Sep | 21° / 15° | 65 | 11.8 | 0 | 12.3 | 6.2 |
| Oct | 18° / 12° | 97 | 13.9 | 0 | 10.8 | 5.4 |
| Nov | 14° / 9° | 135 | 15.6 | 0.1 | 9.5 | 3.5 |
| Dec | 12° / 7° | 105 | 14.4 | 0.4 | 8.8 | 2.8 |
Cloud cover in Spring
The sky is clear or mostly clear about 20% of the time across spring.
Chance of precipitation in Spring
Sestao gets around 278 mm of rain and snow over 43 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 12 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 10 h 54 min in early March to 14 h 54 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 4.6 kWh/m².
Is spring a good time to visit Sestao?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Sestao for sightseeing.
What to pack for Sestao in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Sestao sees daytime highs around 15°C and nights near 9°C. Pack rain gear. Worth having: a warm layer and sun protection. About 43 days see rain.
Sea temperature near Sestao in Spring
The nearest coast averages about 14°C across spring — 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 Sestao in Spring
Clear-sky midday UV across spring averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Sestao 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 Sestao?
Sestao sits at 43.3°N, 3.0°W, 65 m above sea level, in Spain. The nearest listed city is Portugalete, 2.0 km away.
Topography around Sestao
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sestao.
Within 3 km, the terrain around Sestao has significant variations in elevation — a maximum elevation change of 364 m around an average of 37 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 994 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,676 m.
The land around Sestao is covered by artificial surfaces (52%) and trees (26%) within 3 km, trees (54%) within 16 km, and trees (39%) and water (32%) 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 Sestao (43.3098°, -3.0072°, elevation 65 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.