Castelo Branco weather in April

In April, Castelo Branco sees average daytime highs of 20°C and overnight lows near 9°C, with 53 mm of rain across 8.1 wet days and about 13 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 21°C by the end. The sky is clear or mostly clear about 35% 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 36 min by month's end. Set against the rest of the year, April is Castelo Branco's 9th-clearest and 2nd-windiest month. For the whole year in context, see Castelo Branco's year-round climate.

Daytime high: 20°; 7th warmest
Overnight low: 9°; 6th coldest
Rainfall: 53 mm; 8.1 wet days
Daylight: 13 hours; 5:59 AM – 7:02 PM
Cloud cover: 53%; 9th clearest
Wind: 10 km/h; 2nd windiest
Solar energy: 5.48 kWh/m²
Travel score: 6.6; out of 10

Castelo Branco is city seat of Castelo Branco municipality.

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

← March Castelo Branco 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 19°C in the first days to 21°C by the end.

A typical April day in Castelo Branco reaches about 20°C in the afternoon and slips back to 9°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 26°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)	19	19	19	19	19	19	19	19	19	19	19	20	20	20	20	20	20	20	20	20	20	20	20	20	21	21	21	21	21	21
Avg low (°C)	8	8	8	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	10	10	10	10	10	10	10	10	10	10

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

How April really feels in Castelo Branco

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

April sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Castelo Branco weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	13° / 5°	62	8.2	9.5	3.7
Feb	15° / 5°	49	6.4	10.4	4.8
Mar	18° / 8°	58	7.4	11.7	6.2
Apr	20° / 9°	53	8.1	13	6.6
May	24° / 12°	51	7	14.2	7.5
Jun	29° / 15°	10	2.5	14.8	7.0
Jul	32° / 18°	4	1.3	14.5	5.1
Aug	32° / 18°	6	1.4	13.6	5.2
Sep	28° / 16°	34	4.6	12.3	7.1
Oct	22° / 12°	83	8.9	10.9	6.9
Nov	16° / 8°	77	8.3	9.8	5.4
Dec	13° / 6°	75	8.3	9.2	3.9

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 16% of April, with mostly cloudy or overcast conditions the remaining 49%.

	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 (%)	48	48	49	49	50	52	52	53	53	54	54	54	53	53	53	52	52	51	51	51	50	51	51	51	51	51	52	52	52	52
Cloudier (%)	52	52	51	51	50	48	48	47	47	46	46	46	47	47	47	48	48	49	49	49	50	49	49	49	49	49	48	48	48	48

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

Chance of precipitation in April

Any precipitation

Castelo Branco gets around 53 mm of rain over 8.1 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 27% and peaks near 28% 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 (%)	28	28	27	27	27	27	27	27	27	26	26	27	27	27	27	27	27	27	27	27	27	27	27	27	26	26	25	25	25	25

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

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 97% 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 (%)	99	99	98	98	98	98	98	98	98	98	98	98	98	98	98	98	98	98	98	97	97	97	97	96	96	96	95	95	94	94
Comfortable (%)	1	1	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	3	3	3	3	4	4	4	5	5	6	6

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	98	2
4	98	2
5	98	2
6	98	2
7	98	2
8	98	2
9	98	2
10	98	2
11	98	2
12	98	2
13	98	2
14	98	2
15	98	2
16	98	2
17	98	2
18	98	2
19	98	2
20	97	3
21	97	3
22	97	3
23	97	3
24	96	4
25	96	4
26	96	4
27	95	5
28	95	5
29	94	6
30	94	6

Wind in April

Winds average 10 km/h in April.

Across April, daily wind ranges from about 10 km/h on the calmest days to 11 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)	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	10	10	10	10	10	10	10	10	10	10	10	10	10	10
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	11	calm
2	11	calm
3	11	calm
4	11	calm
5	11	calm
6	11	calm
7	11	calm
8	11	calm
9	11	calm
10	11	calm
11	11	calm
12	11	calm
13	11	calm
14	11	calm
15	11	calm
16	11	calm
17	10	calm
18	10	calm
19	10	calm
20	10	calm
21	10	calm
22	10	calm
23	10	calm
24	10	calm
25	10	calm
26	10	calm
27	10	calm
28	10	calm
29	10	calm
30	10	calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over April. Sunrise moves from 6:23 AM to 5:39 AM, and sunset from 6:46 PM to 7:16 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	12.5	12.5	12.6	12.6	12.7	12.7	12.7	12.8	12.8	12.9	12.9	13.0	13.0	13.0	13.1	13.1	13.2	13.2	13.3	13.3	13.3	13.4	13.4	13.5	13.5	13.5	13.6	13.6
Sunrise (AM)	6:23	6:21	6:20	6:18	6:16	6:15	6:13	6:11	6:10	6:08	6:07	6:05	6:03	6:02	6:00	5:59	5:57	5:56	5:54	5:53	5:51	5:50	5:48	5:47	5:45	5:44	5:43	5:41	5:40	5:39
Sunset (PM)	6:46	6:47	6:48	6:49	6:50	6:51	6:52	6:53	6:55	6:56	6:57	6:58	6:59	7:00	7:01	7:02	7:03	7:04	7:05	7:06	7:07	7:08	7:09	7:10	7:11	7:12	7:13	7:14	7:15	7:16

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.4	6:23	6:46
2	12.4	6:21	6:47
3	12.5	6:20	6:48
4	12.5	6:18	6:49
5	12.6	6:16	6:50
6	12.6	6:15	6:51
7	12.7	6:13	6:52
8	12.7	6:11	6:53
9	12.7	6:10	6:55
10	12.8	6:08	6:56
11	12.8	6:07	6:57
12	12.9	6:05	6:58
13	12.9	6:03	6:59
14	13.0	6:02	7:00
15	13.0	6:00	7:01
16	13.0	5:59	7:02
17	13.1	5:57	7:03
18	13.1	5:56	7:04
19	13.2	5:54	7:05
20	13.2	5:53	7:06
21	13.3	5:51	7:07
22	13.3	5:50	7:08
23	13.3	5:48	7:09
24	13.4	5:47	7:10
25	13.4	5:45	7:11
26	13.5	5:44	7:12
27	13.5	5:43	7:13
28	13.5	5:41	7:14
29	13.6	5:40	7:15
30	13.6	5:39	7:16

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.48 kWh/m².

For context, solar energy here swings from a low near 1.83 kWh/m² to a high of 7.74 kWh/m² in July across the year — April's 5.48 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)	5.0	5.0	5.0	5.1	5.1	5.2	5.2	5.3	5.3	5.3	5.4	5.4	5.4	5.5	5.5	5.5	5.5	5.5	5.6	5.6	5.6	5.7	5.7	5.8	5.8	5.8	5.9	5.9	5.9	6.0
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	5.0	Bright
2	5.0	Bright
3	5.0	Bright
4	5.1	Bright
5	5.1	Bright
6	5.2	Bright
7	5.2	Bright
8	5.3	Bright
9	5.3	Bright
10	5.3	Bright
11	5.4	Bright
12	5.4	Bright
13	5.4	Bright
14	5.5	Bright
15	5.5	Bright
16	5.5	Bright
17	5.5	Bright
18	5.5	Bright
19	5.6	Bright
20	5.6	Bright
21	5.6	Bright
22	5.7	Bright
23	5.7	Bright
24	5.8	Bright
25	5.8	Bright
26	5.8	Bright
27	5.9	Bright
28	5.9	Bright
29	5.9	Bright
30	6.0	Bright

Planning a trip in April

Is April a good time to visit Castelo Branco?

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

6.6

Sightseeing

5th-best month of the year

3.4

Beach & pool

7th-best month of the year

April is a reasonable time to visit Castelo Branco for sightseeing.

What to pack for Castelo Branco in April

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

In April, Castelo Branco sees daytime highs around 20°C and nights near 9°C. Worth packing: rain gear and sun protection. About 8 days see rain.

rain gearsun protection

UV index in Castelo Branco in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks 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 Castelo Branco peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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	7	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	6	High
Apr	7	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 Castelo Branco 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 Castelo Branco is worst in August — around 21 µg/m³ PM2.5 (moderate), about 3.3× the cleanest month (November, 6 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)	8	10	12	10	8	9	12	21	10	14	6	7
Level	Good	Good	Moderate	Good	Good	Good	Good	Moderate	Good	Moderate	Good	Good

	PM2.5 (µg/m³)	Level
Jan	8	Good
Feb	10	Good
Mar	12	Moderate
Apr	10	Good
May	8	Good
Jun	9	Good
Jul	12	Good
Aug	21	Moderate
Sep	10	Good
Oct	14	Moderate
Nov	6	Good
Dec	7	Good

Location & terrain

Where is Castelo Branco?

Castelo Branco sits at 39.8°N, 7.5°W, 371 m above sea level, in Portugal. The nearest listed city is Covilhã, 51 km away.

Topography around Castelo Branco

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

Within 3 km, the terrain around Castelo Branco has only modest variations in elevation — a maximum elevation change of 184 m around an average of 362 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 363 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,974 m.

The land around Castelo Branco is covered by grassland (48%), trees (27%) and artificial surfaces (21%) within 3 km, grassland (49%) and trees (39%) within 16 km, and grassland (50%) and trees (43%) within 80 km.

3 km

184 m

grassland 48%

16 km

363 m

grassland 49%

80 km

1,974 m

grassland 50%

treesshrubsgrasslandcroplandartificial surfaceswater

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

April weather nearby: Covilhã 51 km · Portalegre 59 km · Guarda 82 km · Tomar 82 km · Sequeira 84 km · Santo António dos Olivais 89 km · Coimbra 90 km · São Paulo de Frades 90 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 Castelo Branco (39.8236°, -7.491°, elevation 371 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	19	8
2	19	8
3	19	8
4	19	9
5	19	9
6	19	9
7	19	9
8	19	9
9	19	9
10	19	9
11	19	9
12	20	9
13	20	9
14	20	9
15	20	9
16	20	9
17	20	9
18	20	9
19	20	9
20	20	9
21	20	10
22	20	10
23	20	10
24	20	10
25	21	10
26	21	10
27	21	10
28	21	10
29	21	10
30	21	10

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

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

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	98	2
4	98	2
5	98	2
6	98	2
7	98	2
8	98	2
9	98	2
10	98	2
11	98	2
12	98	2
13	98	2
14	98	2
15	98	2
16	98	2
17	98	2
18	98	2
19	98	2
20	97	3
21	97	3
22	97	3
23	97	3
24	96	4
25	96	4
26	96	4
27	95	5
28	95	5
29	94	6
30	94	6

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

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

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

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	98	2
4	98	2
5	98	2
6	98	2
7	98	2
8	98	2
9	98	2
10	98	2
11	98	2
12	98	2
13	98	2
14	98	2
15	98	2
16	98	2
17	98	2
18	98	2
19	98	2
20	97	3
21	97	3
22	97	3
23	97	3
24	96	4
25	96	4
26	96	4
27	95	5
28	95	5
29	94	6
30	94	6

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

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

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

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	98	2
4	98	2
5	98	2
6	98	2
7	98	2
8	98	2
9	98	2
10	98	2
11	98	2
12	98	2
13	98	2
14	98	2
15	98	2
16	98	2
17	98	2
18	98	2
19	98	2
20	97	3
21	97	3
22	97	3
23	97	3
24	96	4
25	96	4
26	96	4
27	95	5
28	95	5
29	94	6
30	94	6