Río Blanco weather in December

In December, Río Blanco sees average daytime highs of 27°C and overnight lows near 20°C, with 50 mm of rain across 16.5 wet days and about 11.3 hours of daylight. It is the 11th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 24% of the time in December, and the air most often feels muggy.

Daylight stretches from about 11 h 18 min at the start of December to 11 h 12 min by month's end. Set against the rest of the year, December is Río Blanco's 5th-clearest and 3rd-windiest month. For the whole year in context, see Río Blanco's year-round climate.

Daytime high
27°
11th warmest
Overnight low
20°
3rd coldest
Rainfall
50 mm
16.5 wet days
Daylight
11 h 12 min
6:00 AM – 5:14 PM
Cloud cover
56%
5th clearest
Wind
10 km/h
3rd windiest
Solar energy
3.96 kWh/m²
Travel score
5.6
out of 10

Río Blanco is urban settlement and municipal seat in Matagalpa Department, Nicaragua.

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical December day in Río Blanco reaches about 27°C in the afternoon and slips back to 20°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 28°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12721
22721
32721
42721
52721
62720
72720
82720
92720
102720
112720
122720
132720
142720
152720
162720
172720
182720
192720
202720
212720
222720
232720
242720
252720
262720
272720
282720
292720
302720
312720

How December really feels in Río Blanco

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

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

Río Blanco weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 20°4015.211.35.9
Feb28° / 20°2911.611.65.9
Mar30° / 21°259.411.95.4
Apr31° / 22°4110.712.34.3
May31° / 22°15922.412.63.1
Jun29° / 22°2122812.72.9
Jul28° / 22°17629.312.73.2
Aug29° / 22°16228.112.43.2
Sep30° / 22°17826.812.13.0
Oct29° / 22°19225.911.73.4
Nov28° / 21°10219.311.44.7
Dec27° / 20°5016.511.35.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 36% of December, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25545
35545
45644
55743
65743
75743
85743
95842
105842
115842
125842
135842
145842
155842
165941
175941
186040
196139
206139
216337
226337
236436
246436
256535
266535
276535
286535
296535
306535
316535

Chance of precipitation in December

Any precipitation

Río Blanco gets around 50 mm of rain over 16.5 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 54% and peaks near 56% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
154
254
354
454
554
653
753
853
953
1053
1153
1253
1353
1454
1554
1654
1754
1854
1954
2054
2154
2254
2355
2455
2555
2656
2756
2856
2956
3055
3155

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 52% of days. Sticky, muggy-or-worse air turns up on roughly 89% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1174548
2174547
3174646
4174745
5184844
6184943
7184942
8194941
9195040
10195040
111105039
121105039
131105138
141105237
151105237
161105336
171105435
181105435
191115434
201115434
211115533
222115433
232115433
242115532
252105632
262105731
272105731
282105830
292105929
302106028
312106127

Wind in December

Winds average 10 km/h in December.

Across December, 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.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3011calm
3111calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 18 min at the start of December to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 5:52 AM to 6:07 AM, and sunset from 5:09 PM to 5:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.35:525:09
211.35:525:10
311.35:535:10
411.35:535:10
511.35:545:10
611.35:555:11
711.35:555:11
811.35:565:11
911.35:565:12
1011.35:575:12
1111.35:575:12
1211.35:585:13
1311.25:585:13
1411.25:595:14
1511.25:595:14
1611.26:005:14
1711.26:005:15
1811.26:015:15
1911.26:015:16
2011.26:025:16
2111.26:025:17
2211.26:035:17
2311.26:035:17
2411.26:045:18
2511.26:045:18
2611.26:055:19
2711.26:055:19
2811.26:055:20
2911.26:065:20
3011.26:065:21
3111.26:075:21

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.96 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.96 kWh/m² to a high of 5.78 kWh/m² in April across the year — December's 3.96 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
33.9Moderate
44.0Moderate
54.0Moderate
64.0Moderate
74.0Moderate
84.0Moderate
94.0Moderate
104.0Moderate
114.0Moderate
124.0Moderate
134.0Moderate
143.9Moderate
153.9Moderate
163.9Moderate
173.9Moderate
183.9Moderate
193.9Moderate
203.9Moderate
213.9Moderate
223.9Moderate
233.9Moderate
243.9Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.9Moderate
293.9Moderate
304.0Moderate
314.0Moderate
Planning a trip in December

Hazard calendar for Río Blanco

In seasonPeak

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

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

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

Is December a good time to visit Río Blanco?

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

5.6
Sightseeing
3rd-best month of the year
5.7
Beach & pool
5th-best month of the year

December is a reasonable time to visit Río Blanco for sightseeing.

What to pack for Río Blanco in December

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

In December, Río Blanco sees daytime highs around 27°C and nights near 20°C. Pack light clothes and rain gear. About 17 days see rain.

light clothesrain gear

UV index in Río Blanco in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Río Blanco peaks around April 9 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 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 highApr 9UV 13Dec 14UV 9
UV index (midday)Level
Jan10Extreme
Feb13Extreme
Mar13Extreme
Apr14Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct12Extreme
Nov10Very high
Dec9Very high

Air quality in Río Blanco in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Río Blanco is worst in July — around 25 µg/m³ PM2.5 (moderate), about 4.6× the cleanest month (December, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1624 µg/m³Dec 215 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar8Good
Apr17Moderate
May21Moderate
Jun19Moderate
Jul25Moderate
Aug18Moderate
Sep13Moderate
Oct10Good
Nov6Good
Dec5Good
Location & terrain

Where is Río Blanco?

Río Blanco sits at 12.9°N, 85.2°W, 265 m above sea level, in Nicaragua. The nearest listed city is Camoapa, 69 km away.

CamoapaBoacoMatagalpaJinotegaJuigalpaSiunaEstelíTipitapa

Topography around Río Blanco

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

Within 3 km, the terrain around Río Blanco has large variations in elevation — a maximum elevation change of 765 m around an average of 368 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,311 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,708 m.

The land around Río Blanco is covered by trees (57%) and grassland (40%) within 3 km, trees (70%) and grassland (30%) within 16 km, and trees (66%) and grassland (34%) within 80 km.

3 km
765 m
16 km
1,311 m
80 km
1,708 m
treesgrasslandartificial surfaces
December weather nearby: Camoapa 69 km · Boaco 70 km · Matagalpa 75 km · Jinotega 86 km · Juigalpa 93 km · Siuna 101 km · Estelí 124 km · Tipitapa 125 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 Río Blanco (12.9344°, -85.2235°, elevation 265 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).