Siuna weather in May

In May, Siuna sees average daytime highs of 31°C and overnight lows near 23°C, with 167 mm of rain across 21.4 wet days and about 12.6 hours of daylight. It is the 2nd-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 10% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 30 min at the start of May to 12 h 42 min by month's end. Set against the rest of the year, May is Siuna's 7th-clearest and 8th-windiest month. For the whole year in context, see Siuna's year-round climate.

Daytime high
31°
2nd warmest
Overnight low
23°
12th coldest
Rainfall
167 mm
21.4 wet days
Daylight
12 h 36 min
5:16 AM – 5:54 PM
Cloud cover
73%
7th clearest
Wind
7 km/h
8th windiest
Solar energy
5.19 kWh/m²
Travel score
3.2
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 May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical May day in Siuna reaches about 31°C in the afternoon and slips back to 23°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 33°C. Set against its neighbours, May runs on par with April and about 2°C warmer than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13223
23223
33223
43223
53223
63223
73223
83223
93223
103223
113223
123223
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283023
293023
303023
313023

How May really feels in Siuna

Once humidity and wind are folded in, May averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Siuna weather by month

How May compares with the rest of the year at a glance. May is the 2nd-warmest and 6th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 71%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24852
34753
44555
54456
64357
74159
84060
93862
103664
113565
123367
133169
142971
152872
162575
172476
182377
192278
202080
212080
222080
231882
241882
251783
261783
271783
281783
291684
301684
311684

Chance of precipitation in May

Any precipitation

Siuna gets around 167 mm of rain over 21.4 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 69% and peaks near 87% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
147
248
350
451
552
653
755
856
958
1059
1161
1263
1365
1467
1569
1671
1773
1874
1976
2077
2179
2280
2381
2482
2583
2683
2784
2885
2986
3086
3187

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 71% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1442522
2441532
3439552
4438562
5437572
6336592
7335602
8334612
9333622
10331642
11329662
12328663
13226693
14224704
15222724
16220735
17218755
18217756
19115786
20114787
21112807
22111808
23110818
2419828
2518829
2608839
2707849
28068410
29068410
30068311
31058411

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 6 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 30 min at the start of May to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over May. Sunrise moves from 5:22 AM to 5:14 AM, and sunset from 5:51 PM to 5:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:225:51
212.55:215:51
312.55:215:51
412.55:205:51
512.55:205:52
612.55:205:52
712.55:195:52
812.65:195:52
912.65:195:53
1012.65:185:53
1112.65:185:53
1212.65:175:53
1312.65:175:54
1412.65:175:54
1512.65:175:54
1612.65:165:54
1712.65:165:55
1812.75:165:55
1912.75:165:55
2012.75:155:55
2112.75:155:56
2212.75:155:56
2312.75:155:56
2412.75:155:57
2512.75:155:57
2612.75:155:57
2712.75:145:58
2812.75:145:58
2912.75:145:58
3012.75:145:59
3112.75:145:59

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.19 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 — May's 5.19 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.6Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.4Bright
115.4Bright
125.3Bright
135.3Bright
145.3Bright
155.2Bright
165.2Bright
175.2Bright
185.1Bright
195.1Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in May

Hazard calendar for Siuna

In seasonPeak

In May, Siuna sits inside 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.

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

Is May a good time to visit Siuna?

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

3.2
Sightseeing
7th-best month of the year
4.8
Beach & pool
7th-best month of the year

May is a weaker month for outdoor sightseeing in Siuna.

What to pack for Siuna in May

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

In May, Siuna sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

UV index in Siuna in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks 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.

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 May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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
May 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).