Siuna, Nicaragua Climate
The warmest month is April, with an average high of 35°C; the coldest is January, with an average low of 20°C. A normal year brings 1003 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 25
- Normal high
- 29°C
- Normal low
- 22°C
- Reanalysis high
- 34°Cin 1996
- Reanalysis low
- 21°Cin 2011
- Chance of a wet day
- 76%
- Daylight
- 12 h 05 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 30°C | 20°C | 36°C (1998) | 15°C (2011) | 31 mm | 8.5 |
| February | 31°C | 20°C | 39°C (1998) | 16°C (1991) | 22 mm | 5.5 |
| March | 33°C | 21°C | 40°C (2010) | 15°C (2018) | 18 mm | 5.2 |
| April | 35°C | 22°C | 40°C (1998) | 18°C (2004) | 23 mm | 5.3 |
| May | 34°C | 23°C | 40°C (1998) | 19°C (2017) | 104 mm | 15.4 |
| June | 31°C | 23°C | 36°C (1991) | 20°C (2001) | 148 mm | 20.4 |
| July | 30°C | 22°C | 36°C (1995) | 19°C (2008) | 123 mm | 20.1 |
| August | 30°C | 22°C | 37°C (1995) | 19°C (1999) | 115 mm | 19.6 |
| September | 30°C | 22°C | 36°C (1994) | 19°C (2001) | 136 mm | 21.2 |
| October | 29°C | 22°C | 35°C (1994) | 19°C (2011) | 162 mm | 21.8 |
| November | 29°C | 21°C | 35°C (1994) | 16°C (1999) | 79 mm | 14.4 |
| December | 29°C | 20°C | 34°C (2003) | 14°C (2010) | 42 mm | 10.0 |
| Year | 31°C | 22°C | 1003 mm | 167 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
1003 mm in a normal year, most in October.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Siuna.
The muggiest month is September, when 100 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 19°C | 74% | 0% | 7% | 33% | 56% | 4% | 0% |
| February | 18°C | 68% | 1% | 9% | 48% | 41% | 1% | 0% |
| March | 17°C | 61% | 2% | 11% | 59% | 27% | 1% | 0% |
| April | 18°C | 59% | 0% | 6% | 48% | 42% | 4% | 0% |
| May | 20°C | 68% | 0% | 1% | 14% | 48% | 36% | 1% |
| June | 22°C | 81% | 0% | 0% | 1% | 21% | 74% | 3% |
| July | 22°C | 81% | 0% | 0% | 1% | 25% | 72% | 1% |
| August | 22°C | 81% | 0% | 0% | 1% | 27% | 70% | 2% |
| September | 22°C | 84% | 0% | 0% | 1% | 17% | 79% | 4% |
| October | 22°C | 86% | 0% | 0% | 0% | 19% | 80% | 1% |
| November | 21°C | 83% | 0% | 1% | 6% | 39% | 54% | 0% |
| December | 20°C | 79% | 0% | 3% | 17% | 57% | 24% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is March, with the sky 46 percent covered on average; the cloudiest is June, at 81 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is January, averaging 5.8 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 18, with 12 h 57 min of daylight; the shortest is Dec 13, with 11 h 19 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Siuna in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-26. Sun and moon: computed with the NOAA solar equations and Meeus.