Custoias weather in April

In April, Custoias sees average daytime highs of 17°C and overnight lows near 7°C, with 54 mm of rain across 9.8 wet days and about 13.1 hours of daylight. It is the 7th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 16°C in the first days to 18°C by the end. The sky is clear or mostly clear about 29% 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 42 min by month's end. Set against the rest of the year, April is Custoias's 9th-clearest and 1st-windiest month. For the whole year in context, see Custoias's year-round climate.

Daytime high: 17°; 7th warmest
Overnight low: 7°; 6th coldest
Rainfall: 54 mm; 9.8 wet days
Daylight: 13 h 06 min; 5:57 AM – 7:02 PM
Cloud cover: 58%; 9th clearest
Wind: 9 km/h; 1st windiest
Solar energy: 5.31 kWh/m²
Travel score: 5.6; out of 10

Custoias is human settlement in Portugal.

Air quality: Good; PM10 27.6 µg/m³ · 2010

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

← March Custoias 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

Highs climb over the month, from about 16°C in the first days to 18°C by the end.

A typical April day in Custoias reaches about 17°C in the afternoon and slips back to 7°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 23°C. Set against its neighbours, April runs about 2°C warmer than March and about 4°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)	16	16	16	16	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	19
Avg low (°C)	6	6	6	6	6	6	6	6	6	7	7	7	7	7	7	7	7	7	7	7	7	7	7	8	8	8	8	8	8	8

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

Custoias weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 5th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	10° / 3°	62	8.7	9.4	2.3
Feb	12° / 3°	43	6.6	10.4	3.5
Mar	15° / 5°	49	7.9	11.7	4.9
Apr	17° / 7°	54	9.8	13.1	5.6
May	21° / 10°	49	9.2	14.3	6.7
Jun	26° / 13°	20	4.8	14.9	7.8
Jul	29° / 15°	12	2.6	14.7	7.1
Aug	29° / 15°	13	3.4	13.6	7.1
Sep	25° / 13°	34	4.6	12.3	7.9
Oct	19° / 10°	83	9.3	10.9	6.3
Nov	13° / 6°	69	9.2	9.7	3.9
Dec	10° / 4°	68	8.3	9.1	2.5

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 18% of April, with mostly cloudy or overcast conditions the remaining 54%.

	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 (%)	43	43	45	45	45	47	48	48	49	49	50	50	50	49	49	48	48	47	48	46	46	46	45	44	44	44	44	44	44	44
Cloudier (%)	57	57	55	55	55	53	52	52	51	51	50	50	50	51	51	52	52	53	52	54	54	54	55	56	56	56	56	56	56	56

	Clearer (%)	Cloudier (%)
1	43	57
2	43	57
3	45	55
4	45	55
5	45	55
6	47	53
7	48	52
8	48	52
9	49	51
10	49	51
11	50	50
12	50	50
13	50	50
14	49	51
15	49	51
16	48	52
17	48	52
18	47	53
19	48	52
20	46	54
21	46	54
22	46	54
23	45	55
24	44	56
25	44	56
26	44	56
27	44	56
28	44	56
29	44	56
30	44	56

Chance of precipitation in April

Any precipitation

Custoias gets around 54 mm of rain over 9.8 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 32% and peaks near 33% 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 (%)	33	33	33	33	33	33	33	33	33	33	33	33	33	33	33	33	33	33	33	33	32	32	32	32	31	31	30	30	30	30

	Rain chance (%)
1	33
2	33
3	33
4	33
5	33
6	33
7	33
8	33
9	33
10	33
11	33
12	33
13	33
14	33
15	33
16	33
17	33
18	33
19	33
20	33
21	32
22	32
23	32
24	32
25	31
26	31
27	30
28	30
29	30
30	30

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 100% 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 (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

Wind in April

Winds average 9 km/h in April, the windiest month of the year.

Across April, daily wind ranges from about 9 km/h on the calmest days to 10 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)	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	9	9	9	9	9	9	9	9	9	9	9	9
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

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

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 78 minutes over April. Sunrise moves from 6:22 AM to 5:36 AM, and sunset from 6:46 PM to 7:18 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	12.5	12.5	12.5	12.6	12.6	12.7	12.7	12.8	12.8	12.9	12.9	13.0	13.0	13.1	13.1	13.1	13.2	13.2	13.3	13.3	13.4	13.4	13.4	13.5	13.5	13.6	13.6	13.7	13.7
Sunrise (AM)	6:22	6:20	6:18	6:17	6:15	6:13	6:11	6:10	6:08	6:06	6:05	6:03	6:01	6:00	5:58	5:57	5:55	5:53	5:52	5:50	5:49	5:47	5:46	5:44	5:43	5:41	5:40	5:38	5:37	5:36
Sunset (PM)	6:46	6:47	6:48	6:49	6:51	6:52	6:53	6:54	6:55	6:56	6:57	6:58	6:59	7:00	7:01	7:02	7:04	7:05	7:06	7:07	7:08	7:09	7:10	7:11	7:12	7:13	7:14	7:15	7:17	7:18

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.4	6:22	6:46
2	12.5	6:20	6:47
3	12.5	6:18	6:48
4	12.5	6:17	6:49
5	12.6	6:15	6:51
6	12.6	6:13	6:52
7	12.7	6:11	6:53
8	12.7	6:10	6:54
9	12.8	6:08	6:55
10	12.8	6:06	6:56
11	12.9	6:05	6:57
12	12.9	6:03	6:58
13	13.0	6:01	6:59
14	13.0	6:00	7:00
15	13.1	5:58	7:01
16	13.1	5:57	7:02
17	13.1	5:55	7:04
18	13.2	5:53	7:05
19	13.2	5:52	7:06
20	13.3	5:50	7:07
21	13.3	5:49	7:08
22	13.4	5:47	7:09
23	13.4	5:46	7:10
24	13.4	5:44	7:11
25	13.5	5:43	7:12
26	13.5	5:41	7:13
27	13.6	5:40	7:14
28	13.6	5:38	7:15
29	13.7	5:37	7:17
30	13.7	5:36	7:18

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.31 kWh/m².

For context, solar energy here swings from a low near 1.57 kWh/m² to a high of 7.49 kWh/m² in July across the year — April's 5.31 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)	4.8	4.8	4.9	4.9	5.0	5.0	5.0	5.1	5.1	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.4	5.4	5.4	5.4	5.5	5.5	5.5	5.6	5.6	5.6	5.7	5.7	5.8	5.8
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.8	Bright
2	4.8	Bright
3	4.9	Bright
4	4.9	Bright
5	5.0	Bright
6	5.0	Bright
7	5.0	Bright
8	5.1	Bright
9	5.1	Bright
10	5.2	Bright
11	5.2	Bright
12	5.2	Bright
13	5.3	Bright
14	5.3	Bright
15	5.3	Bright
16	5.3	Bright
17	5.4	Bright
18	5.4	Bright
19	5.4	Bright
20	5.4	Bright
21	5.5	Bright
22	5.5	Bright
23	5.5	Bright
24	5.6	Bright
25	5.6	Bright
26	5.6	Bright
27	5.7	Bright
28	5.7	Bright
29	5.8	Bright
30	5.8	Bright

Planning a trip in April

Is April a good time to visit Custoias?

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

5.6

Sightseeing

7th-best month of the year

1.5

Beach & pool

7th-best month of the year

April is a reasonable time to visit Custoias for sightseeing.

What to pack for Custoias in April

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

In April, Custoias sees daytime highs around 17°C and nights near 7°C. Worth packing: a warm layer, rain gear and sun protection. About 10 days see rain.

a warm layerrain gearsun protection

UV index in Custoias in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks 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 Custoias peaks around July 12 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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	5	6	7	9	9	9	6	5	2	2
Level	Low	Moderate	High	High	High	Very high	Very high	Very high	High	Moderate	Moderate	Low

	UV index (midday)	Level
Jan	2	Low
Feb	3	Moderate
Mar	5	High
Apr	6	High
May	7	High
Jun	9	Very high
Jul	9	Very high
Aug	9	Very high
Sep	6	High
Oct	5	Moderate
Nov	2	Moderate
Dec	2	Low

Air quality in Custoias in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.

Air quality in Custoias is worst in August — around 22 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (November, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	10	10	13	11	8	9	12	22	18	13	7	7
Level	Good	Good	Moderate	Good	Good	Good	Good	Moderate	Moderate	Moderate	Good	Good

	PM2.5 (µg/m³)	Level
Jan	10	Good
Feb	10	Good
Mar	13	Moderate
Apr	11	Good
May	8	Good
Jun	9	Good
Jul	12	Good
Aug	22	Moderate
Sep	18	Moderate
Oct	13	Moderate
Nov	7	Good
Dec	7	Good

Location & terrain

Where is Custoias?

Custoias sits at 41.1°N, 7.3°W, 569 m above sea level, in Portugal. The nearest listed city is Vila Nova de Foz Côa, 15 km away.

Topography around Custoias

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Custoias.

Within 3 km, the terrain around Custoias has large variations in elevation — a maximum elevation change of 671 m around an average of 479 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 921 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,573 m.

The land around Custoias is covered by shrubs (40%), grassland (30%) and trees (29%) within 3 km, grassland (44%), trees (26%) and shrubs (23%) within 16 km, and grassland (58%) and trees (30%) within 80 km.

3 km

671 m

shrubs 40%

16 km

921 m

grassland 44%

80 km

1,573 m

grassland 58%

treesshrubsgrasslandcroplandartificial surfaceswater

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

April weather nearby: Vila Nova de Foz Côa 15 km · Vila Real 41 km · Baião 60 km · Sequeira 62 km · Guarda 63 km · Viseu 70 km · Chaves 72 km · Cabeceiras de Basto 72 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 Custoias (41.1053°, -7.321°, elevation 569 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. 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	16	6
2	16	6
3	16	6
4	16	6
5	17	6
6	17	6
7	17	6
8	17	6
9	17	6
10	17	7
11	17	7
12	17	7
13	17	7
14	17	7
15	17	7
16	17	7
17	17	7
18	17	7
19	17	7
20	18	7
21	18	7
22	18	7
23	18	7
24	18	8
25	18	8
26	18	8
27	18	8
28	18	8
29	18	8
30	19	8

	Clearer (%)	Cloudier (%)
1	43	57
2	43	57
3	45	55
4	45	55
5	45	55
6	47	53
7	48	52
8	48	52
9	49	51
10	49	51
11	50	50
12	50	50
13	50	50
14	49	51
15	49	51
16	48	52
17	48	52
18	47	53
19	48	52
20	46	54
21	46	54
22	46	54
23	45	55
24	44	56
25	44	56
26	44	56
27	44	56
28	44	56
29	44	56
30	44	56

	Rain chance (%)
1	33
2	33
3	33
4	33
5	33
6	33
7	33
8	33
9	33
10	33
11	33
12	33
13	33
14	33
15	33
16	33
17	33
18	33
19	33
20	33
21	32
22	32
23	32
24	32
25	31
26	31
27	30
28	30
29	30
30	30

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

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

	Clearer (%)	Cloudier (%)
1	43	57
2	43	57
3	45	55
4	45	55
5	45	55
6	47	53
7	48	52
8	48	52
9	49	51
10	49	51
11	50	50
12	50	50
13	50	50
14	49	51
15	49	51
16	48	52
17	48	52
18	47	53
19	48	52
20	46	54
21	46	54
22	46	54
23	45	55
24	44	56
25	44	56
26	44	56
27	44	56
28	44	56
29	44	56
30	44	56

	Rain chance (%)
1	33
2	33
3	33
4	33
5	33
6	33
7	33
8	33
9	33
10	33
11	33
12	33
13	33
14	33
15	33
16	33
17	33
18	33
19	33
20	33
21	32
22	32
23	32
24	32
25	31
26	31
27	30
28	30
29	30
30	30

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

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

	Clearer (%)	Cloudier (%)
1	43	57
2	43	57
3	45	55
4	45	55
5	45	55
6	47	53
7	48	52
8	48	52
9	49	51
10	49	51
11	50	50
12	50	50
13	50	50
14	49	51
15	49	51
16	48	52
17	48	52
18	47	53
19	48	52
20	46	54
21	46	54
22	46	54
23	45	55
24	44	56
25	44	56
26	44	56
27	44	56
28	44	56
29	44	56
30	44	56

	Rain chance (%)
1	33
2	33
3	33
4	33
5	33
6	33
7	33
8	33
9	33
10	33
11	33
12	33
13	33
14	33
15	33
16	33
17	33
18	33
19	33
20	33
21	32
22	32
23	32
24	32
25	31
26	31
27	30
28	30
29	30
30	30

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100