Algueirão in Spring
In spring (March, April and May), Algueirão sees average daytime highs around 18°C and overnight lows near 13°C, with 147 mm of rain over about 22 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 15°C in early March to 21°C by late May. The sky is clear or mostly clear about 43% of the time across spring, and the air most often feels dry.
Spring is Algueirão's 3rd-best season to visit on our travel score. For the whole year in context, see Algueirão's year-round climate.
- Avg daytime high
- 18°C
- 3rd-warmest season
- Avg overnight low
- 13°C
- Rainfall
- 147 mm
- 22 wet days
- Avg wind
- 17 km/h
- Travel score
- 6.2
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Algueirão in Spring
Over the season highs climb from about 15°C in early March to 21°C by late May.
A typical spring day in Algueirão reaches about 18°C and drops to 13°C overnight. The warmest of the three months is May, the coolest March.
Algueirão 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 | 14° / 10° | 68 | 8.9 | 9.6 | 4.2 |
| Feb | 15° / 10° | 51 | 7.5 | 10.5 | 4.6 |
| Mar | 16° / 11° | 53 | 8.1 | 11.7 | 5.5 |
| Apr | 17° / 12° | 51 | 8.4 | 13 | 6.0 |
| May | 19° / 14° | 42 | 5.9 | 14.1 | 7.1 |
| Jun | 22° / 16° | 10 | 2.1 | 14.7 | 8.4 |
| Jul | 24° / 18° | 2 | 0.6 | 14.4 | 9.3 |
| Aug | 24° / 18° | 4 | 1 | 13.5 | 9.2 |
| Sep | 23° / 17° | 29 | 4.1 | 12.3 | 8.3 |
| Oct | 20° / 16° | 77 | 8.9 | 11 | 6.7 |
| Nov | 17° / 13° | 82 | 10.2 | 9.9 | 5.5 |
| Dec | 15° / 11° | 79 | 9.4 | 9.3 | 4.5 |
Cloud cover in Spring
The sky is clear or mostly clear about 43% of the time across spring.
Chance of precipitation in Spring
Algueirão gets around 147 mm of rain over 22 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 17 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 06 min in early March to 14 h 30 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 5.7 kWh/m².
Is spring a good time to visit Algueirão?
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 Algueirão for sightseeing.
What to pack for Algueirão in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Algueirão sees daytime highs around 18°C and nights near 13°C. Pack sun protection. Worth having: a warm layer and rain gear. About 22 days see rain.
Sea temperature near Algueirão in Spring
The nearest coast averages about 16°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 19 km away) is warmest in September at about 19°C and coldest in February near 15°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 15 | 15 | 15 | 16 | 18 | 18 | 19 | 19 | 18 | 17 | 16 |
| Comfort | Cool | Bracing | Bracing | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Cool |
| Feb | 15 | Bracing |
| Mar | 15 | Bracing |
| Apr | 15 | Cool |
| May | 16 | Cool |
| Jun | 18 | Cool |
| Jul | 18 | Cool |
| Aug | 19 | Cool |
| Sep | 19 | Cool |
| Oct | 18 | Cool |
| Nov | 17 | Cool |
| Dec | 16 | Cool |
UV index in Algueirão 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 Algueirão peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (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 | 3 | 6 | 8 | 7 | 9 | 9 | 9 | 6 | 5 | 3 | 2 |
| Level | Low | Moderate | High | Very high | Very high | Very high | Very high | Very high | High | High | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 6 | High |
| Apr | 8 | Very high |
| May | 7 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 6 | High |
| Oct | 5 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Where is Algueirão?
Algueirão sits at 38.8°N, 9.3°W, 176 m above sea level, in Portugal. The nearest listed city is Sintra, 3.0 km away.
Topography around Algueirão
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Algueirão.
Within 3 km, the terrain around Algueirão has only modest variations in elevation — a maximum elevation change of 214 m around an average of 178 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 513 m; within 80 km, large variations in elevation — a maximum elevation change of 656 m.
The land around Algueirão is covered by artificial surfaces (41%), grassland (31%) and trees (25%) within 3 km, grassland (29%), trees (28%) and artificial surfaces (20%) within 16 km, and water (46%) and grassland (25%) 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 Algueirão (38.7976°, -9.3437°, elevation 176 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.