El Castillo weather in April

In April, El Castillo sees average daytime highs of 31°C and overnight lows near 23°C, with 47 mm of rain across 13.4 wet days and about 12.2 hours of daylight. It is the 1st-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 28% of the time in April, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of April to 12 h 24 min by month's end. Set against the rest of the year, April is El Castillo's 4th-clearest and 4th-windiest month. For the whole year in context, see El Castillo's year-round climate.

Daytime high
31°
1st warmest
Overnight low
23°
8th coldest
Rainfall
47 mm
13.4 wet days
Daylight
12 h 12 min
5:30 AM – 5:45 PM
Cloud cover
60%
4th clearest
Wind
10 km/h
4th windiest
Solar energy
5.42 kWh/m²
Travel score
3.9
out of 10

El Castillo is historic village in Río San Juan Department, Nicaragua.

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical April day in El Castillo reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 33°C. Set against its neighbours, April runs about 2°C warmer than March and on par with May.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13123
23123
33123
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183223
193223
203223
213223
223223
233223
243223
253223
263223
273223
283223
293224
303224

How April really feels in El Castillo

Once humidity and wind are folded in, April averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in April is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

El Castillo weather by month

How April compares with the rest of the year at a glance. April is the 1st-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 22°6020.211.45.0
Feb29° / 22°4115.911.64.9
Mar30° / 22°311211.94.9
Apr31° / 23°4713.412.23.9
May31° / 24°22025.912.52.7
Jun30° / 24°29729.612.62.5
Jul30° / 23°27130.312.62.7
Aug30° / 23°26029.912.42.6
Sep31° / 23°29029.412.12.4
Oct30° / 23°30129.711.82.7
Nov29° / 23°2122611.53.3
Dec28° / 22°11224.211.44.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 23% of April, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16832
26733
36634
46535
56436
66337
76337
86238
96139
106040
115941
125842
135743
145644
155545
165347
175248
185149
194951
204753
214654
224456
234060
243961
253763
263466
273367
283169
293169
302971

Chance of precipitation in April

Any precipitation

El Castillo gets around 47 mm of rain over 13.4 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 45% and peaks near 64% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
135
235
335
436
536
636
737
837
938
1038
1139
1239
1340
1440
1541
1642
1742
1843
1945
2046
2148
2250
2352
2454
2555
2657
2759
2861
2962
3064

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the oppressive band about 76% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
131681
230691
329701
428711
526731
625741
724751
823761
922771
1021781
1121772
1220782
1319792
1419792
1518793
1618793
1717794
1817794
1917785
2016786
2115787
2214788
2313789
24127810
25117811
26107812
27107713
2897714
2987814
3077914

Wind in April

Winds average 10 km/h in April.

Across April, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 06 min at the start of April to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over April. Sunrise moves from 5:39 AM to 5:24 AM, and sunset from 5:45 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:395:45
212.15:395:45
312.15:385:45
412.15:385:45
512.15:375:45
612.15:365:45
712.25:365:45
812.25:355:45
912.25:355:45
1012.25:345:45
1112.25:335:45
1212.25:335:45
1312.25:325:45
1412.25:325:45
1512.25:315:45
1612.25:305:45
1712.35:305:45
1812.35:295:45
1912.35:295:45
2012.35:285:45
2112.35:285:45
2212.35:275:45
2312.35:275:46
2412.35:265:46
2512.35:265:46
2612.35:255:46
2712.35:255:46
2812.45:245:46
2912.45:245:46
3012.45:245:46

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.42 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.27 kWh/m² to a high of 5.42 kWh/m² in April across the year — April's 5.42 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.1Bright
Planning a trip in April

Hazard calendar for El Castillo

In seasonPeak

None of El Castillo's seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

El Castillo sits in the Atlantic hurricane belt; the season peaks August–October.

El Castillo's rainy season runs May–November, when most of the year's rain falls.

Atlantic hurricane
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is April a good time to visit El Castillo?

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

3.9
Sightseeing
5th-best month of the year
6.0
Beach & pool
3rd-best month of the year

April is a weaker month for outdoor sightseeing in El Castillo.

What to pack for El Castillo in April

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

In April, El Castillo sees daytime highs around 31°C and nights near 23°C. Pack light clothes. Worth having: rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

Sea temperature near El Castillo in April

The nearest coast averages about 28°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 69 km away) is warmest in September at about 29°C and coldest in January near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar28Warm
Apr28Tropical
May29Tropical
Jun29Tropical
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in El Castillo in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in El Castillo peaks around March 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 9 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 19UV 14Dec 16UV 9
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar14Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct12Extreme
Nov10Extreme
Dec9Very high

Air quality in El Castillo 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 El Castillo is worst in July — around 24 µg/m³ PM2.5 (moderate), about 3.6× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1623 µg/m³Dec 127 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb9Good
Mar10Good
Apr18Moderate
May22Moderate
Jun20Moderate
Jul24Moderate
Aug19Moderate
Sep13Moderate
Oct10Good
Nov7Good
Dec7Good
Location & terrain

Where is El Castillo?

El Castillo sits at 11.0°N, 84.4°W, 0 m above sea level, in Nicaragua. The nearest listed city is San Carlos, 43 km away.

San CarlosNueva GuineaSan José

Topography around El Castillo

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

Within 3 km, the terrain around El Castillo has only modest variations in elevation — a maximum elevation change of 128 m around an average of 59 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 403 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,141 m.

The land around El Castillo is covered by trees (69%) and grassland (26%) within 3 km, trees (67%) and grassland (31%) within 16 km, and trees (60%) and grassland (28%) within 80 km.

3 km
128 m
16 km
403 m
80 km
2,141 m
treesgrasslandcroplandwater
April weather nearby: San Carlos 43 km · La Fortuna 67 km · Nueva Guinea 75 km · Quesada 77 km · San José 81 km · Monteverde 91 km · Cañas 101 km · San_Ramon_ 104 km

Nicaragua travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 34% of US
price level, 2025
GDP per capita
$3,173
2025
Happiness
6.3 / 10
World Happiness, 2025
Homicide rate
11.3
per 100k, 2021
Road deaths
16.9
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Moderate
EF EPI 512
Religion
Roman Catholic 45%Protestant 39%none 14%other 1%

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 El Castillo (11.0189°, -84.397°, elevation 0 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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. 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).