Siuna in Summer
In summer (June, July and August), Siuna sees average daytime highs around 29°C and overnight lows near 22°C, with 596 mm of rain over about 85 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 7% of the time across summer, and the air most often feels oppressive.
Summer is Siuna's weakest 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
- 29°C
- 2nd-warmest season
- Avg overnight low
- 22°C
- Rainfall
- 596 mm
- 85 wet days
- Avg wind
- 7 km/h
- Travel score
- 3.0
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Siuna in Summer
Across summer, daytime highs hold fairly steady around 29°C.
A typical summer day in Siuna reaches about 29°C and drops to 22°C overnight. The warmest of the three months is June, the coolest August.
How summer really feels in Siuna
Once humidity and wind are folded in, summer brings about 92 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Siuna weather by month
How the three summer months (June, July and August) 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 Summer
The sky is clear or mostly clear about 7% of the time across summer.
Chance of precipitation in Summer
Siuna gets around 596 mm of rain over 85 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 7 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 42 min in early June to 12 h 18 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 4.6 kWh/m².
Hazard calendar for Siuna
In summer, Siuna overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Siuna's rainy season runs May–November, when most of the year's rain falls.
Is summer a good time to visit Siuna?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Siuna.
What to pack for Siuna in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Siuna sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 85 days see rain.
UV index in Siuna in Summer
Clear-sky midday UV across summer averages 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 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 Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer 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.