Siuna weather in January

In January, Siuna sees average daytime highs of 27°C and overnight lows near 20°C, with 45 mm of rain across 16.3 wet days and about 11.3 hours of daylight. It is the 12th-warmest and 9th-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 25% of the time in January, and the air most often feels muggy.

Daylight stretches from about 11 h 12 min at the start of January to 11 h 24 min by month's end. Set against the rest of the year, January is Siuna's 3rd-clearest and 1st-windiest month. For the whole year in context, see Siuna's year-round climate.

Daytime high
27°
12th warmest
Overnight low
20°
2nd coldest
Rainfall
45 mm
16.3 wet days
Daylight
11 h 18 min
6:10 AM – 5:27 PM
Cloud cover
52%
3rd clearest
Wind
9 km/h
1st windiest
Solar energy
3.98 kWh/m²
Travel score
5.7
out of 10

Siuna is urban and populated area of the municipality of Siuna, Nicaragua.

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

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

A typical January day in Siuna 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 25°C and 28°C. Set against its neighbours, January runs on par with December and about 1°C cooler than February.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12720
22720
32720
42720
52720
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 January really feels in Siuna

Once humidity and wind are folded in, January 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

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

Siuna weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 20°4516.311.35.7
Feb28° / 20°3213.111.55.7
Mar30° / 21°2911.111.95.2
Apr31° / 22°381112.34.2
May31° / 23°16721.412.63.2
Jun30° / 23°21627.312.82.9
Jul29° / 22°19928.812.73.1
Aug29° / 22°18128.412.53.0
Sep30° / 22°20027.512.12.9
Oct29° / 22°21927.211.73.2
Nov28° / 21°12420.511.44.5
Dec27° / 21°5617.711.25.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 47% of January, with mostly cloudy or overcast conditions the remaining 28%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16634
26634
36634
46634
56733
66733
76832
86832
96832
106931
117030
127030
137129
147228
157228
167327
177426
187426
197426
207525
217525
227525
237624
247624
257624
267723
277723
287624
297624
307624
317624

Chance of precipitation in January

Any precipitation

Siuna gets around 45 mm of rain over 16.3 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 52% and peaks near 58% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
158
258
358
458
557
657
756
855
954
1053
1153
1252
1351
1451
1550
1650
1750
1849
1949
2049
2149
2249
2349
2449
2549
2650
2750
2850
2950
3051
3151

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the muggy band about 62% of days. Sticky, muggy-or-worse air turns up on roughly 88% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1284644
2284743
3284842
4284940
5285139
6285337
7285535
8285634
9395632
10395830
11396028
12396127
13396325
143106324
153106423
162106622
172106721
182116621
192116720
202116819
212116819
222116918
232116918
242116918
252116918
262107018
272107117
282107117
29297217
30297217
31297217

Wind in January

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

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

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 12 min at the start of January to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over January. Sunrise moves from 6:06 AM to 6:11 AM, and sunset from 5:18 PM to 5:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:065:18
211.26:075:19
311.26:075:19
411.26:075:20
511.26:085:20
611.26:085:21
711.26:085:22
811.26:085:22
911.26:095:23
1011.26:095:23
1111.26:095:24
1211.26:105:24
1311.36:105:25
1411.36:105:25
1511.36:105:26
1611.36:105:27
1711.36:105:27
1811.36:115:28
1911.36:115:28
2011.36:115:29
2111.36:115:29
2211.36:115:30
2311.36:115:30
2411.36:115:31
2511.36:115:31
2611.36:115:32
2711.46:115:32
2811.46:115:33
2911.46:115:33
3011.46:115:34
3111.46:115:34

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 3.98 kWh/m².

For context, solar energy here swings from a low near 3.84 kWh/m² to a high of 5.67 kWh/m² in April across the year — January's 3.98 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.9Moderate
53.9Moderate
63.9Moderate
73.9Moderate
83.9Moderate
93.9Moderate
103.9Moderate
113.9Moderate
123.9Moderate
133.9Moderate
144.0Moderate
154.0Moderate
164.0Moderate
174.0Bright
184.0Bright
194.0Bright
204.1Bright
214.1Bright
224.1Bright
234.1Bright
244.1Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.3Bright
314.3Bright
Planning a trip in January

Hazard calendar for Siuna

In seasonPeak

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

Siuna'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 January a good time to visit Siuna?

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

5.7
Sightseeing
1st-best month of the year
5.8
Beach & pool
4th-best month of the year

January is a reasonable time to visit Siuna for sightseeing.

What to pack for Siuna in January

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

In January, Siuna sees daytime highs around 27°C and nights near 20°C. Pack light clothes and rain gear. About 16 days see rain.

light clothesrain gear

UV index in Siuna in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Siuna peaks around April 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 11UV 13Dec 15UV 9
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec9Very high

Air quality in Siuna in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Siuna is worst in July — around 29 µg/m³ PM2.5 (moderate), about 5.1× the cleanest month (December, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1528 µg/m³Dec 206 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar10Good
Apr27Moderate
May28Moderate
Jun23Moderate
Jul29Moderate
Aug21Moderate
Sep14Moderate
Oct10Good
Nov7Good
Dec6Good
Location & terrain

Where is Siuna?

Siuna sits at 13.7°N, 84.8°W, 193 m above sea level, in Nicaragua. The nearest listed city is Río Blanco, 101 km away.

Río BlancoJalapaJinotegaMatagalpaPuerto CabezasBoacoCamoapaDulce Nombre de Culmí

Topography around Siuna

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

Within 3 km, the terrain around Siuna has only modest variations in elevation — a maximum elevation change of 241 m around an average of 191 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 770 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,645 m.

The land around Siuna is covered by trees (55%) and grassland (42%) within 3 km, trees (51%) and grassland (49%) within 16 km, and trees (65%) and grassland (33%) within 80 km.

3 km
241 m
16 km
770 m
80 km
1,645 m
treesgrasslandartificial surfaceswetland
January weather nearby: Río Blanco 101 km · Jalapa 147 km · Jinotega 151 km · Matagalpa 153 km · Puerto Cabezas 154 km · Boaco 170 km · Camoapa 170 km · Dulce Nombre de Culmí 172 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 Siuna (13.7332°, -84.7772°, elevation 193 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).