El Castillo weather in October

In October, El Castillo sees average daytime highs of 30°C and overnight lows near 23°C, with 301 mm of rain across 29.7 wet days and about 11.8 hours of daylight. It is the 7th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 1% of the time in October, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of October to 11 h 36 min by month's end. Set against the rest of the year, October is El Castillo's 10th-clearest and 11th-windiest month. For the whole year in context, see El Castillo's year-round climate.

Daytime high
30°
7th warmest
Overnight low
23°
6th coldest
Rainfall
301 mm
29.7 wet days
Daylight
11 h 48 min
5:30 AM – 5:15 PM
Cloud cover
87%
10th clearest
Wind
5 km/h
11th windiest
Solar energy
3.75 kWh/m²
Travel score
2.7
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 October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical October day in El Castillo reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, October runs on par with September and about 1°C warmer than November.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How October really feels in El Castillo

Once humidity and wind are folded in, October averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

El Castillo weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 1st-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 October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 7% of October, with mostly cloudy or overcast conditions the remaining 92%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1793
2793
3793
4793
5793
6793
7793
8793
9793
10793
11793
12793
13793
14793
15892
16892
17892
18892
19991
20991
21991
22991
23991
24991
251189
261189
271189
281189
291189
301288
311288

Chance of precipitation in October

Any precipitation

El Castillo gets around 301 mm of rain over 29.7 wet days in October, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 96% and peaks near 97% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
197
296
396
495
595
695
795
895
995
1095
1195
1295
1395
1495
1596
1696
1796
1897
1997
2097
2197
2297
2397
2497
2597
2697
2796
2896
2995
3095
3194

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the oppressive band about 65% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
105545
205644
305644
405743
505842
605842
705941
806040
906040
1006139
1106238
1206238
1306238
1406337
1506337
1606436
1706436
1806436
1906535
2006535
2116534
2216633
2316732
2416831
2517029
2617128
2717326
2817524
2917722
3017920
3118118

Wind in October

Winds average 5 km/h in October.

Across October, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
286calm
296calm
306calm
316calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 54 min at the start of October to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over October. Sunrise moves from 5:29 AM to 5:33 AM, and sunset from 5:24 PM to 5:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:295:24
211.95:295:23
311.95:295:22
411.95:295:22
511.95:295:21
611.95:295:21
711.85:305:20
811.85:305:19
911.85:305:19
1011.85:305:18
1111.85:305:18
1211.85:305:17
1311.85:305:17
1411.85:305:16
1511.85:305:16
1611.85:305:15
1711.75:305:15
1811.75:305:14
1911.75:305:14
2011.75:315:13
2111.75:315:13
2211.75:315:12
2311.75:315:12
2411.75:315:12
2511.75:315:11
2611.75:325:11
2711.65:325:11
2811.65:325:10
2911.65:325:10
3011.65:335:10
3111.65:335:09

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.75 kWh/m².

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 — October's 3.75 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.0Bright
24.0Bright
34.0Bright
44.0Moderate
54.0Moderate
63.9Moderate
73.9Moderate
83.9Moderate
93.9Moderate
103.8Moderate
113.8Moderate
123.8Moderate
133.8Moderate
143.8Moderate
153.8Moderate
163.7Moderate
173.7Moderate
183.7Moderate
193.7Moderate
203.7Moderate
213.7Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.6Moderate
263.6Moderate
273.5Moderate
283.5Moderate
293.5Moderate
303.5Moderate
313.5Moderate
Planning a trip in October

Hazard calendar for El Castillo

In seasonPeak

In October, El Castillo sits inside its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.

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 October a good time to visit El Castillo?

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

2.7
Sightseeing
7th-best month of the year
3.7
Beach & pool
8th-best month of the year

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

What to pack for El Castillo in October

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

In October, El Castillo sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. About 30 days see rain.

light clothesrain gear

Sea temperature near El Castillo in October

The nearest coast averages about 29°C in October — 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 October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 12 (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 October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October 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
October 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).