León weather in September

In September, León sees average daytime highs of 30°C and overnight lows near 24°C, with 370 mm of rain across 27.4 wet days and about 12.1 hours of daylight. It is the 11th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 7% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is León's 11th-clearest and 10th-windiest month. For the whole year in context, see León's year-round climate.

Daytime high
30°
11th warmest
Overnight low
24°
6th coldest
Rainfall
370 mm
27.4 wet days
Daylight
12 h 06 min
5:40 AM – 5:44 PM
Cloud cover
78%
11th clearest
Wind
7 km/h
10th windiest
Solar energy
5.62 kWh/m²
Travel score
2.9
out of 10

León is colonial city and capital of the León Department, Nicaragua.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical September day in León reaches about 30°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, September runs about 1°C cooler than August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13024
23024
33024
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143024
153024
163024
173024
183024
193024
203024
213024
223024
233024
243024
252924
262924
272924
282924
292924
302924

How September really feels in León

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

León weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°40.811.45.5
Feb32° / 24°20.711.65.2
Mar33° / 25°61.511.94.7
Apr33° / 26°387.812.34.0
May31° / 25°28121.312.63.1
Jun31° / 25°27822.912.73.1
Jul32° / 25°14916.512.73.5
Aug31° / 25°23122.812.43.1
Sep30° / 24°37027.412.12.9
Oct29° / 24°40925.811.73.3
Nov30° / 24°11512.611.44.6
Dec31° / 24°82.311.35.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 80%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12377
22476
32476
42476
52476
62476
72476
82377
92377
102377
112377
122377
132278
142278
152278
162179
172080
181981
191882
201882
211882
221783
231684
241684
251783
261783
271783
281882
291882
301882

Chance of precipitation in September

Any precipitation

León gets around 370 mm of rain over 27.4 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 91% and peaks near 95% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
188
288
388
488
588
688
788
888
989
1089
1189
1289
1390
1490
1591
1691
1792
1892
1993
2093
2194
2294
2394
2495
2595
2694
2794
2894
2993
3093

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 73% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
127226
227226
317227
417227
517227
617227
717128
807228
907228
1007228
1107228
1207129
1307129
1407129
1507129
1607129
1707129
1807228
1907228
2007228
2107327
2207426
2307426
2407525
2507624
2607723
2707822
2807921
2907921
3007921

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 12 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over September. Sunrise moves from 5:40 AM to 5:40 AM, and sunset from 5:55 PM to 5:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:405:55
212.25:405:54
312.25:405:53
412.25:405:52
512.25:405:52
612.25:405:51
712.25:405:50
812.25:405:50
912.25:405:49
1012.15:405:48
1112.15:405:48
1212.15:405:47
1312.15:405:46
1412.15:405:45
1512.15:405:45
1612.15:405:44
1712.15:405:43
1812.05:405:42
1912.05:405:42
2012.05:405:41
2112.05:405:40
2212.05:405:40
2312.05:405:39
2412.05:405:38
2512.05:405:37
2611.95:405:37
2711.95:405:36
2811.95:405:35
2911.95:405:35
3011.95:405:34

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.62 kWh/m².

For context, solar energy here swings from a low near 5.09 kWh/m² to a high of 6.9 kWh/m² in April across the year — September's 5.62 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.6Bright
175.6Bright
185.5Bright
195.5Bright
205.5Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.2Bright
305.2Bright
Planning a trip in September

Hazard calendar for León

In seasonPeak

In September, León sits inside its atlantic hurricane and monsoon season. The full year is below, with each hazard's peak months called out.

León sits in the Atlantic hurricane belt; the season peaks August–October.

León's monsoon runs May–June, when most of the year's rain falls.

Atlantic hurricane
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit León?

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

2.9
Sightseeing
12th-best month of the year
4.0
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in León.

What to pack for León in September

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

In September, León sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

Sea temperature near León in September

The nearest coast averages about 30°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 28 km away) is warmest in August at about 30°C and coldest in February near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb27Warm
Mar28Warm
Apr29Tropical
May29Tropical
Jun29Tropical
Jul29Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in León in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 León peaks around March 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 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 highMar 21UV 13Dec 13UV 9
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar14Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec9Very high

Air quality in León in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in León is worst in April — around 35 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (January, 11 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateApr 2234 µg/m³Jan 1511 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar19Moderate
Apr35Moderate
May33Moderate
Jun24Moderate
Jul26Moderate
Aug22Moderate
Sep19Moderate
Oct18Moderate
Nov17Moderate
Dec12Moderate
Location & terrain

Where is León?

León sits at 12.4°N, 86.9°W, 102 m above sea level, in Nicaragua. The nearest listed city is Chichigalpa, 22 km away.

CorintoChinandegaNagaroteEl ViejoMateareCiudad Sandino

Topography around León

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

Within 3 km, the terrain around León has only modest variations in elevation — a maximum elevation change of 92 m around an average of 100 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 341 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,751 m.

The land around León is covered by trees (39%) and artificial surfaces (34%) within 3 km, trees (39%), grassland (30%) and cropland (26%) within 16 km, and water (34%), trees (31%) and grassland (23%) within 80 km.

3 km
92 m
16 km
341 m
80 km
1,751 m
treesshrubsgrasslandcroplandartificial surfaceswatermangroves
September weather nearby: Chichigalpa 22 km · La Paz Centro 24 km · Corinto 32 km · Chinandega 35 km · Nagarote 39 km · El Viejo 40 km · Mateare 54 km · Ciudad Sandino 66 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 León (12.4353°, -86.8786°, elevation 102 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).