Olhão in Spring
In spring (March, April and May), Olhão sees average daytime highs around 18°C and overnight lows near 14°C, with 115 mm of rain over about 16 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 16°C in early March to 21°C by late May. The sky is clear or mostly clear about 52% of the time across spring, and the air most often feels dry.
Spring is Olhão's 3rd-best season to visit on our travel score. For the whole year in context, see Olhão's year-round climate.
- Avg daytime high
- 18°C
- 3rd-warmest season
- Avg overnight low
- 14°C
- Rainfall
- 115 mm
- 16 wet days
- Avg wind
- 18 km/h
- Travel score
- 6.6
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Olhão in Spring
Over the season highs climb from about 16°C in early March to 21°C by late May.
A typical spring day in Olhão reaches about 18°C and drops to 14°C overnight. The warmest of the three months is May, the coolest March.
Olhão 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 | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 15° / 12° | 53 | 6.9 | 9.7 | 5.0 |
| Feb | 15° / 12° | 45 | 5.4 | 10.6 | 5.2 |
| Mar | 16° / 13° | 51 | 6.2 | 11.7 | 5.8 |
| Apr | 17° / 14° | 40 | 5.5 | 12.9 | 6.5 |
| May | 20° / 16° | 24 | 4.4 | 14 | 7.5 |
| Jun | 22° / 19° | 5 | 0.8 | 14.5 | 8.9 |
| Jul | 25° / 20° | 1 | 0.1 | 14.3 | 9.6 |
| Aug | 25° / 21° | 2 | 0.3 | 13.4 | 9.5 |
| Sep | 23° / 20° | 17 | 2.7 | 12.3 | 8.6 |
| Oct | 21° / 18° | 67 | 6.5 | 11 | 7.2 |
| Nov | 18° / 15° | 68 | 7.2 | 10 | 6.4 |
| Dec | 16° / 13° | 86 | 7.6 | 9.5 | 5.3 |
Cloud cover in Spring
The sky is clear or mostly clear about 52% of the time across spring.
Chance of precipitation in Spring
Olhão gets around 115 mm of rain over 16 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 18 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 06 min in early March to 14 h 18 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 6.2 kWh/m².
Is spring a good time to visit Olhão?
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 Olhão for sightseeing.
What to pack for Olhão in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Olhão sees daytime highs around 18°C and nights near 14°C. Pack sun protection. Worth having: a warm layer. About 16 days see rain.
Sea temperature near Olhão in Spring
The nearest coast averages about 17°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 17 km away) is warmest in August at about 22°C and coldest in February near 16°C.
It's comfortable for a long swim from Jun 22 to Oct 25 — about 4.1 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 17 | 16 | 16 | 17 | 18 | 20 | 21 | 22 | 21 | 21 | 19 | 17 |
| Comfort | Cool | Cool | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Refreshing | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 17 | Cool |
| Feb | 16 | Cool |
| Mar | 16 | Cool |
| Apr | 17 | Cool |
| May | 18 | Cool |
| Jun | 20 | Cool |
| Jul | 21 | Refreshing |
| Aug | 22 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 21 | Refreshing |
| Nov | 19 | Cool |
| Dec | 17 | Cool |
UV index in Olhão in Spring
Clear-sky midday UV across spring averages 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 Olhão peaks around July 14 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 7 | 8 | 7 | 9 | 10 | 9 | 7 | 5 | 3 | 2 |
| Level | Moderate | Moderate | High | Very high | Very high | Very high | Extreme | Very high | High | High | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 3 | Moderate |
| Mar | 7 | High |
| Apr | 8 | Very high |
| May | 7 | Very high |
| Jun | 9 | Very high |
| Jul | 10 | Extreme |
| Aug | 9 | Very high |
| Sep | 7 | High |
| Oct | 5 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Where is Olhão?
Olhão sits at 37.0°N, 7.8°W, 11 m above sea level, in Portugal. The nearest listed city is Quelfes, 4.0 km away.
Topography around Olhão
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Olhão.
Within 3 km, the terrain around Olhão has only modest variations in elevation — a maximum elevation change of 66 m around an average of 11 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 408 m; within 80 km, large variations in elevation — a maximum elevation change of 894 m.
The land around Olhão is covered by water (36%) and grassland (28%) within 3 km, water (47%) and grassland (24%) within 16 km, and water (41%) and grassland (30%) within 80 km.
Portugal travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / E / F
- 230 V · 50 Hz
- Prices
- ≈ 60% of US
- price level, 2025
- GDP per capita
- $32,082
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 95%
- of population, 2024
- Homicide rate
- 0.7
- per 100k, 2022
- Road deaths
- 8.2
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very high
- EF EPI 612
- 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 Olhão (37.0286°, -7.8411°, elevation 11 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.