Siuna in Winter
In winter (December, January and February), Siuna sees average daytime highs around 27°C and overnight lows near 20°C, with 133 mm of rain over about 47 wet days across the season. It is the coldest season of the year and the driest season of the year.
Across winter, daytime highs hold fairly steady around 27°C. The sky is clear or mostly clear about 27% of the time across winter, and the air most often feels muggy.
Winter is Siuna's best season of the year to visit on our travel score. For the whole year in context, see Siuna's year-round climate.
- Avg daytime high
- 27°C
- coldest season of the year
- Avg overnight low
- 20°C
- Rainfall
- 133 mm
- 47 wet days
- Avg wind
- 9 km/h
- Travel score
- 5.6
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Siuna in Winter
Across winter, daytime highs hold fairly steady around 27°C.
A typical winter day in Siuna reaches about 27°C and drops to 20°C overnight. The warmest of the three months is February, the coolest January.
How winter really feels in Siuna
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
winter 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 the three winter months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 27° / 20° | 45 | 16.3 | 11.3 | 5.7 |
| Feb | 28° / 20° | 32 | 13.1 | 11.5 | 5.7 |
| Mar | 30° / 21° | 29 | 11.1 | 11.9 | 5.2 |
| Apr | 31° / 22° | 38 | 11 | 12.3 | 4.2 |
| May | 31° / 23° | 167 | 21.4 | 12.6 | 3.2 |
| Jun | 30° / 23° | 216 | 27.3 | 12.8 | 2.9 |
| Jul | 29° / 22° | 199 | 28.8 | 12.7 | 3.1 |
| Aug | 29° / 22° | 181 | 28.4 | 12.5 | 3.0 |
| Sep | 30° / 22° | 200 | 27.5 | 12.1 | 2.9 |
| Oct | 29° / 22° | 219 | 27.2 | 11.7 | 3.2 |
| Nov | 28° / 21° | 124 | 20.5 | 11.4 | 4.5 |
| Dec | 27° / 21° | 56 | 17.7 | 11.2 | 5.4 |
Cloud cover in Winter
The sky is clear or mostly clear about 27% of the time across winter.
Chance of precipitation in Winter
Siuna gets around 133 mm of rain over 47 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 9 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 12 min in early December to 11 h 42 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 4.1 kWh/m².
Hazard calendar for Siuna
None of Siuna's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Siuna's rainy season runs May–November, when most of the year's rain falls.
Is winter a good time to visit Siuna?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Siuna for sightseeing.
What to pack for Siuna in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Siuna sees daytime highs around 27°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 47 days see rain.
UV index in Siuna in Winter
Clear-sky midday UV across winter averages 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 10 | 12 | 13 | 13 | 12 | 13 | 11 | 12 | 12 | 11 | 10 | 9 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Extreme |
| Feb | 12 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 12 | Extreme |
| Jun | 13 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 10 | Very high |
| Dec | 9 | Very high |
Air quality in Siuna in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 6 | 7 | 10 | 27 | 28 | 23 | 29 | 21 | 14 | 10 | 7 | 6 |
| Level | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 6 | Good |
| Feb | 7 | Good |
| Mar | 10 | Good |
| Apr | 27 | Moderate |
| May | 28 | Moderate |
| Jun | 23 | Moderate |
| Jul | 29 | Moderate |
| Aug | 21 | Moderate |
| Sep | 14 | Moderate |
| Oct | 10 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
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.
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.
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
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.