Masaya weather in September

In September, Masaya sees average daytime highs of 30°C and overnight lows near 23°C, with 196 mm of rain across 25.9 wet days and about 12.1 hours of daylight. It is the 7th-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 9% 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 Masaya's 11th-clearest and 11th-windiest month. For the whole year in context, see Masaya's year-round climate.

Daytime high
30°
7th warmest
Overnight low
23°
7th coldest
Rainfall
196 mm
25.9 wet days
Daylight
12 h 06 min
5:37 AM – 5:41 PM
Cloud cover
77%
11th clearest
Wind
8 km/h
11th windiest
Solar energy
5.37 kWh/m²
Travel score
3.0
out of 10

Masaya is urban settlement and municipal seat in Masaya 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 Masaya reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023

How September really feels in Masaya

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.

Masaya weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°30.911.46.6
Feb30° / 22°20.711.66.2
Mar31° / 23°30.911.95.5
Apr32° / 24°204.312.34.4
May32° / 24°17518.612.53.3
Jun30° / 24°19224.612.73.1
Jul30° / 24°11520.812.63.7
Aug30° / 24°14022.412.43.4
Sep30° / 23°19625.912.13.0
Oct29° / 23°22125.311.73.4
Nov29° / 23°6810.911.45.1
Dec30° / 22°92.411.36.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% 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 78%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12575
22575
32674
42674
52674
62674
72773
82674
92674
102674
112575
122575
132476
142476
152377
162278
172278
182179
192080
201882
211882
221882
231783
241783
251783
261783
271783
281783
291882
301783

Chance of precipitation in September

Any precipitation

Masaya gets around 196 mm of rain over 25.9 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 86% and peaks near 91% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
181
281
381
481
582
682
782
882
982
1082
1183
1283
1384
1484
1585
1685
1786
1887
1988
2089
2189
2290
2390
2491
2591
2691
2791
2891
2991
3091

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 96% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
11972
21972
31963
41963
51963
61963
71963
81963
91963
101963
111963
121963
131963
141963
151963
161963
171954
181954
190964
200964
210964
220964
230964
240964
250964
260964
270973
280973
290973
300973

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

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 5:37 AM to 5:37 AM, and sunset from 5:51 PM to 5:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:375:51
212.25:375:50
312.25:375:50
412.25:375:49
512.25:375:48
612.25:375:48
712.25:375:47
812.25:375:46
912.15:375:46
1012.15:375:45
1112.15:375:44
1212.15:375:44
1312.15:375:43
1412.15:375:42
1512.15:375:41
1612.15:375:41
1712.15:375:40
1812.05:375:39
1912.05:375:39
2012.05:375:38
2112.05:375:37
2212.05:375:36
2312.05:375:36
2412.05:375:35
2512.05:375:34
2612.05:375:34
2711.95:375:33
2811.95:375:32
2911.95:375:32
3011.95:375:31

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.37 kWh/m².

For context, solar energy here swings from a low near 4.83 kWh/m² to a high of 6.7 kWh/m² in April across the year — September's 5.37 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.6Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.3Bright
185.3Bright
195.3Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.0Bright
305.0Bright
Planning a trip in September

Hazard calendar for Masaya

In seasonPeak

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

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

Masaya's rainy season runs May–October, when most of the year's rain falls.

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

Is September a good time to visit Masaya?

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

3.0
Sightseeing
12th-best month of the year
4.2
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Masaya.

What to pack for Masaya in September

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

In September, Masaya sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

Sea temperature near Masaya in September

The nearest coast averages about 29°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 49 km away) is warmest in September at about 29°C and coldest in February near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb26Warm
Mar26Warm
Apr27Warm
May29Tropical
Jun29Tropical
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct28Tropical
Nov28Warm
Dec27Warm

UV index in Masaya 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 Masaya peaks around March 22 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 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 22UV 14Dec 14UV 9
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec9Very high

Air quality in Masaya 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 Masaya is worst in July — around 25 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (January, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1625 µg/m³Jan 187 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb9Good
Mar10Good
Apr21Moderate
May24Moderate
Jun21Moderate
Jul25Moderate
Aug20Moderate
Sep15Moderate
Oct13Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Masaya?

Masaya sits at 12.0°N, 86.1°W, 242 m above sea level, in Nicaragua. The nearest listed city is Masatepe, 8.0 km away.

Topography around Masaya

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

Within 3 km, the terrain around Masaya has only modest variations in elevation — a maximum elevation change of 227 m around an average of 225 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 742 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,591 m.

The land around Masaya is covered by trees (47%), artificial surfaces (22%) and water (20%) within 3 km, trees (62%) and grassland (23%) within 16 km, and water (39%), trees (33%) and grassland (23%) within 80 km.

3 km
227 m
16 km
742 m
80 km
1,591 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Masatepe 8.0 km · San Marcos 14 km · Granada 16 km · Jinotepe 18 km · Diriamba 20 km · El Crucero 23 km · Managua 24 km · Nandaime 24 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 Masaya (11.9732°, -86.0959°, elevation 242 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).