Olhão weather in April

In April, Olhão sees average daytime highs of 17°C and overnight lows near 14°C, with 40 mm of rain across 5.5 wet days and about 12.9 hours of daylight. It is the 8th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 17°C through the month. The sky is clear or mostly clear about 48% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of April to 13 h 30 min by month's end. Set against the rest of the year, April is Olhão's 6th-clearest and 4th-windiest month. For the whole year in context, see Olhão's year-round climate.

Daytime high: 17°; 8th warmest
Overnight low: 14°; 5th coldest
Rainfall: 40 mm; 5.5 wet days
Daylight: 12 h 54 min; 6:03 AM – 7:00 PM
Cloud cover: 43%; 6th clearest
Wind: 19 km/h; 4th windiest
Solar energy: 6.26 kWh/m²
Travel score: 6.5; out of 10

Olhão is city seat of Olhão municipality.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← March Olhão year-round climate May →Best places to visit in April

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 17°C through the month.

A typical April day in Olhão reaches about 17°C in the afternoon and slips back to 14°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 20°C. Set against its neighbours, April runs about 1°C warmer than March and about 2°C cooler than May.

	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
Avg high (°C)	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	18	18	18	18	18	18	18	18	18	18	18
Avg low (°C)	13	13	13	13	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	15	15

	Avg high (°C)	Avg low (°C)
1	17	13
2	17	13
3	17	13
4	17	13
5	17	14
6	17	14
7	17	14
8	17	14
9	17	14
10	17	14
11	17	14
12	17	14
13	17	14
14	17	14
15	17	14
16	17	14
17	17	14
18	17	14
19	17	14
20	18	14
21	18	14
22	18	14
23	18	14
24	18	14
25	18	14
26	18	14
27	18	14
28	18	14
29	18	15
30	18	15

Olhão weather by month

How April compares with the rest of the year at a glance. April is the 8th-warmest and 7th-wettest month here — the current month is highlighted below.

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 April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 20% of April, with mostly cloudy or overcast conditions the remaining 32%.

	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
Clearer (%)	65	65	66	66	66	67	68	68	68	68	69	69	69	69	69	69	69	69	68	68	68	67	68	68	68	69	69	70	70	70
Cloudier (%)	35	35	34	34	34	33	32	32	32	32	31	31	31	31	31	31	31	31	32	32	32	33	32	32	32	31	31	30	30	30

	Clearer (%)	Cloudier (%)
1	65	35
2	65	35
3	66	34
4	66	34
5	66	34
6	67	33
7	68	32
8	68	32
9	68	32
10	68	32
11	69	31
12	69	31
13	69	31
14	69	31
15	69	31
16	69	31
17	69	31
18	69	31
19	68	32
20	68	32
21	68	32
22	67	33
23	68	32
24	68	32
25	68	32
26	69	31
27	69	31
28	70	30
29	70	30
30	70	30

Chance of precipitation in April

Any precipitation

Olhão gets around 40 mm of rain over 5.5 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 19% and peaks near 20% 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
Rain chance (%)	19	19	19	19	18	18	18	18	18	18	18	18	19	19	19	19	19	20	20	20	20	19	19	19	19	19	18	18	18	18

	Rain chance (%)
1	19
2	19
3	19
4	19
5	18
6	18
7	18
8	18
9	18
10	18
11	18
12	18
13	19
14	19
15	19
16	19
17	19
18	20
19	20
20	20
21	20
22	19
23	19
24	19
25	19
26	19
27	18
28	18
29	18
30	18

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, April lands in the dry band about 77% of days. It rarely turns muggy — the humid and sticky bands barely register.

	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
Dry (%)	86	86	85	85	84	83	82	81	81	80	79	78	78	77	77	76	76	75	75	73	73	73	72	72	71	71	70	69	68	67
Comfortable (%)	14	14	15	15	16	17	18	19	19	20	21	22	22	23	23	24	24	25	25	26	26	26	27	27	28	28	29	30	31	32
Humid (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1	1	1

	Dry (%)	Comfortable (%)	Humid (%)
1	86	14	0
2	86	14	0
3	85	15	0
4	85	15	0
5	84	16	0
6	83	17	0
7	82	18	0
8	81	19	0
9	81	19	0
10	80	20	0
11	79	21	0
12	78	22	0
13	78	22	0
14	77	23	0
15	77	23	0
16	76	24	0
17	76	24	0
18	75	25	0
19	75	25	0
20	73	26	1
21	73	26	1
22	73	26	1
23	72	27	1
24	72	27	1
25	71	28	1
26	71	28	1
27	70	29	1
28	69	30	1
29	68	31	1
30	67	32	1

Wind in April

Winds average 19 km/h in April.

Across April, daily wind ranges from about 18 km/h on the calmest days to 19 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
Wind speed (km/h)	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	18	18	18	18	18	18	18	18	18
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	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	19	light breeze
2	19	light breeze
3	19	light breeze
4	19	light breeze
5	19	light breeze
6	19	light breeze
7	19	light breeze
8	19	light breeze
9	19	light breeze
10	19	light breeze
11	19	light breeze
12	19	light breeze
13	19	light breeze
14	19	light breeze
15	19	light breeze
16	19	light breeze
17	19	light breeze
18	19	light breeze
19	19	light breeze
20	19	light breeze
21	19	light breeze
22	18	light breeze
23	18	light breeze
24	18	light breeze
25	18	light breeze
26	18	light breeze
27	18	light breeze
28	18	light breeze
29	18	light breeze
30	18	light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over April. Sunrise moves from 6:25 AM to 5:45 AM, and sunset from 6:47 PM to 7:13 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
Daylight (h)	12.4	12.4	12.4	12.5	12.5	12.6	12.6	12.6	12.7	12.7	12.8	12.8	12.8	12.9	12.9	12.9	13.0	13.0	13.1	13.1	13.1	13.2	13.2	13.2	13.3	13.3	13.4	13.4	13.4	13.5
Sunrise (AM)	6:25	6:24	6:22	6:21	6:19	6:18	6:16	6:15	6:13	6:12	6:10	6:09	6:07	6:06	6:05	6:03	6:02	6:00	5:59	5:58	5:56	5:55	5:54	5:52	5:51	5:50	5:48	5:47	5:46	5:45
Sunset (PM)	6:47	6:48	6:48	6:49	6:50	6:51	6:52	6:53	6:54	6:55	6:56	6:56	6:57	6:58	6:59	7:00	7:01	7:02	7:03	7:04	7:05	7:05	7:06	7:07	7:08	7:09	7:10	7:11	7:12	7:13

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.4	6:25	6:47
2	12.4	6:24	6:48
3	12.4	6:22	6:48
4	12.5	6:21	6:49
5	12.5	6:19	6:50
6	12.6	6:18	6:51
7	12.6	6:16	6:52
8	12.6	6:15	6:53
9	12.7	6:13	6:54
10	12.7	6:12	6:55
11	12.8	6:10	6:56
12	12.8	6:09	6:56
13	12.8	6:07	6:57
14	12.9	6:06	6:58
15	12.9	6:05	6:59
16	12.9	6:03	7:00
17	13.0	6:02	7:01
18	13.0	6:00	7:02
19	13.1	5:59	7:03
20	13.1	5:58	7:04
21	13.1	5:56	7:05
22	13.2	5:55	7:05
23	13.2	5:54	7:06
24	13.2	5:52	7:07
25	13.3	5:51	7:08
26	13.3	5:50	7:09
27	13.4	5:48	7:10
28	13.4	5:47	7:11
29	13.4	5:46	7:12
30	13.5	5:45	7:13

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 6.26 kWh/m².

For context, solar energy here swings from a low near 2.34 kWh/m² to a high of 7.93 kWh/m² in July across the year — April's 6.26 kWh/m² falls in the middle.

	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
Solar energy (kWh/m²)	5.7	5.8	5.8	5.8	5.9	5.9	6.0	6.0	6.0	6.1	6.1	6.1	6.2	6.2	6.2	6.3	6.3	6.3	6.4	6.4	6.4	6.5	6.5	6.5	6.6	6.6	6.6	6.7	6.7	6.7
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	5.7	Bright
2	5.8	Bright
3	5.8	Bright
4	5.8	Bright
5	5.9	Bright
6	5.9	Bright
7	6.0	Bright
8	6.0	Bright
9	6.0	Intense
10	6.1	Intense
11	6.1	Intense
12	6.1	Intense
13	6.2	Intense
14	6.2	Intense
15	6.2	Intense
16	6.3	Intense
17	6.3	Intense
18	6.3	Intense
19	6.4	Intense
20	6.4	Intense
21	6.4	Intense
22	6.5	Intense
23	6.5	Intense
24	6.5	Intense
25	6.6	Intense
26	6.6	Intense
27	6.6	Intense
28	6.7	Intense
29	6.7	Intense
30	6.7	Intense

Planning a trip in April

Is April a good time to visit Olhão?

Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.5

Sightseeing

7th-best month of the year

1.8

Beach & pool

8th-best month of the year

April is a reasonable time to visit Olhão for sightseeing.

What to pack for Olhão in April

From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In April, Olhão sees daytime highs around 17°C and nights near 14°C. Pack sun protection. About 6 days see rain.

sun protection

Sea temperature near Olhão in April

The nearest coast averages about 17°C in April — 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 April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 8 (very high — sun protection essential). 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

Location & terrain

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.

3 km

66 m

water 36%

16 km

408 m

water 47%

80 km

894 m

water 41%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland

← March Olhão year-round climate May →Best places to visit in April

April weather nearby: Quelfes 4.0 km · Laranjeiro 5.0 km · Faro 8.0 km · Loulé 20 km · Tavira 20 km · Quarteira 23 km · Albufeira 37 km · Ayamonte 44 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. 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).

	Avg high (°C)	Avg low (°C)
1	17	13
2	17	13
3	17	13
4	17	13
5	17	14
6	17	14
7	17	14
8	17	14
9	17	14
10	17	14
11	17	14
12	17	14
13	17	14
14	17	14
15	17	14
16	17	14
17	17	14
18	17	14
19	17	14
20	18	14
21	18	14
22	18	14
23	18	14
24	18	14
25	18	14
26	18	14
27	18	14
28	18	14
29	18	15
30	18	15

	Clearer (%)	Cloudier (%)
1	65	35
2	65	35
3	66	34
4	66	34
5	66	34
6	67	33
7	68	32
8	68	32
9	68	32
10	68	32
11	69	31
12	69	31
13	69	31
14	69	31
15	69	31
16	69	31
17	69	31
18	69	31
19	68	32
20	68	32
21	68	32
22	67	33
23	68	32
24	68	32
25	68	32
26	69	31
27	69	31
28	70	30
29	70	30
30	70	30

	Rain chance (%)
1	19
2	19
3	19
4	19
5	18
6	18
7	18
8	18
9	18
10	18
11	18
12	18
13	19
14	19
15	19
16	19
17	19
18	20
19	20
20	20
21	20
22	19
23	19
24	19
25	19
26	19
27	18
28	18
29	18
30	18

	Dry (%)	Comfortable (%)	Humid (%)
1	86	14	0
2	86	14	0
3	85	15	0
4	85	15	0
5	84	16	0
6	83	17	0
7	82	18	0
8	81	19	0
9	81	19	0
10	80	20	0
11	79	21	0
12	78	22	0
13	78	22	0
14	77	23	0
15	77	23	0
16	76	24	0
17	76	24	0
18	75	25	0
19	75	25	0
20	73	26	1
21	73	26	1
22	73	26	1
23	72	27	1
24	72	27	1
25	71	28	1
26	71	28	1
27	70	29	1
28	69	30	1
29	68	31	1
30	67	32	1

	Avg high (°C)	Avg low (°C)
1	17	13
2	17	13
3	17	13
4	17	13
5	17	14
6	17	14
7	17	14
8	17	14
9	17	14
10	17	14
11	17	14
12	17	14
13	17	14
14	17	14
15	17	14
16	17	14
17	17	14
18	17	14
19	17	14
20	18	14
21	18	14
22	18	14
23	18	14
24	18	14
25	18	14
26	18	14
27	18	14
28	18	14
29	18	15
30	18	15

	Clearer (%)	Cloudier (%)
1	65	35
2	65	35
3	66	34
4	66	34
5	66	34
6	67	33
7	68	32
8	68	32
9	68	32
10	68	32
11	69	31
12	69	31
13	69	31
14	69	31
15	69	31
16	69	31
17	69	31
18	69	31
19	68	32
20	68	32
21	68	32
22	67	33
23	68	32
24	68	32
25	68	32
26	69	31
27	69	31
28	70	30
29	70	30
30	70	30

	Rain chance (%)
1	19
2	19
3	19
4	19
5	18
6	18
7	18
8	18
9	18
10	18
11	18
12	18
13	19
14	19
15	19
16	19
17	19
18	20
19	20
20	20
21	20
22	19
23	19
24	19
25	19
26	19
27	18
28	18
29	18
30	18

	Dry (%)	Comfortable (%)	Humid (%)
1	86	14	0
2	86	14	0
3	85	15	0
4	85	15	0
5	84	16	0
6	83	17	0
7	82	18	0
8	81	19	0
9	81	19	0
10	80	20	0
11	79	21	0
12	78	22	0
13	78	22	0
14	77	23	0
15	77	23	0
16	76	24	0
17	76	24	0
18	75	25	0
19	75	25	0
20	73	26	1
21	73	26	1
22	73	26	1
23	72	27	1
24	72	27	1
25	71	28	1
26	71	28	1
27	70	29	1
28	69	30	1
29	68	31	1
30	67	32	1

	Avg high (°C)	Avg low (°C)
1	17	13
2	17	13
3	17	13
4	17	13
5	17	14
6	17	14
7	17	14
8	17	14
9	17	14
10	17	14
11	17	14
12	17	14
13	17	14
14	17	14
15	17	14
16	17	14
17	17	14
18	17	14
19	17	14
20	18	14
21	18	14
22	18	14
23	18	14
24	18	14
25	18	14
26	18	14
27	18	14
28	18	14
29	18	15
30	18	15

	Clearer (%)	Cloudier (%)
1	65	35
2	65	35
3	66	34
4	66	34
5	66	34
6	67	33
7	68	32
8	68	32
9	68	32
10	68	32
11	69	31
12	69	31
13	69	31
14	69	31
15	69	31
16	69	31
17	69	31
18	69	31
19	68	32
20	68	32
21	68	32
22	67	33
23	68	32
24	68	32
25	68	32
26	69	31
27	69	31
28	70	30
29	70	30
30	70	30

	Rain chance (%)
1	19
2	19
3	19
4	19
5	18
6	18
7	18
8	18
9	18
10	18
11	18
12	18
13	19
14	19
15	19
16	19
17	19
18	20
19	20
20	20
21	20
22	19
23	19
24	19
25	19
26	19
27	18
28	18
29	18
30	18

	Dry (%)	Comfortable (%)	Humid (%)
1	86	14	0
2	86	14	0
3	85	15	0
4	85	15	0
5	84	16	0
6	83	17	0
7	82	18	0
8	81	19	0
9	81	19	0
10	80	20	0
11	79	21	0
12	78	22	0
13	78	22	0
14	77	23	0
15	77	23	0
16	76	24	0
17	76	24	0
18	75	25	0
19	75	25	0
20	73	26	1
21	73	26	1
22	73	26	1
23	72	27	1
24	72	27	1
25	71	28	1
26	71	28	1
27	70	29	1
28	69	30	1
29	68	31	1
30	67	32	1