Iriona weather in September

In September, Iriona sees average daytime highs of 29°C and overnight lows near 26°C, with 110 mm of rain across 19 wet days and about 12.1 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 24% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Iriona's 10th-clearest and 12th-windiest month. For the whole year in context, see Iriona's year-round climate.

Daytime high
29°
1st warmest
Overnight low
26°
12th coldest
Rainfall
110 mm
19 wet days
Daylight
12 h 06 min
5:32 AM – 5:37 PM
Cloud cover
65%
10th clearest
Wind
12 km/h
12th windiest
Solar energy
5.65 kWh/m²
Travel score
4.2
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Iriona reaches about 29°C in the afternoon and slips back to 26°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12926
22926
32926
42926
52926
62926
72926
82926
92926
102926
112926
122926
132926
142926
152926
162926
172926
182926
192926
202926
212926
222926
232926
242926
252926
262926
272926
282926
292925
302925

How September really feels in Iriona

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.

Iriona weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 23°14320.211.25.3
Feb26° / 23°7415.511.55.9
Mar27° / 24°6912.911.96.5
Apr28° / 25°359.612.36.4
May29° / 25°8614.612.75.1
Jun29° / 25°11519.712.94.2
Jul29° / 25°13725.812.93.8
Aug29° / 25°11922.512.54.0
Sep29° / 26°1101912.14.2
Oct28° / 25°26524.311.64.0
Nov27° / 24°25824.311.34.3
Dec26° / 24°14623.111.14.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 60%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24555
34456
44456
54357
64357
74357
84357
94159
104159
114159
124159
134060
144159
154060
164060
173961
183961
193862
203862
213862
223763
233763
243763
253664
263664
273367
283367
293367
303367

Chance of precipitation in September

Any precipitation

Iriona gets around 110 mm of rain over 19 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 64% and peaks near 73% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
163
263
362
462
561
661
760
860
960
1060
1160
1261
1361
1461
1562
1663
1763
1864
1964
2065
2166
2266
2367
2468
2569
2670
2771
2871
2972
3073

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 82% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
11486
21585
31585
41585
51585
61585
71585
81585
91585
101585
111684
121684
131684
141783
151783
161783
171783
181882
191882
201981
212080
222080
232179
242278
252377
262377
272476
282575
292575
302674

Wind in September

Winds average 12 km/h in September, the calmest month.

Across September, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 18 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 24 minutes over September. Sunrise moves from 5:31 AM to 5:33 AM, and sunset from 5:50 PM to 5:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:315:50
212.35:315:49
312.35:315:48
412.35:315:47
512.35:315:46
612.25:315:46
712.25:315:45
812.25:315:44
912.25:315:43
1012.25:325:42
1112.25:325:41
1212.15:325:41
1312.15:325:40
1412.15:325:39
1512.15:325:38
1612.15:325:37
1712.15:325:37
1812.15:325:36
1912.05:325:35
2012.05:325:34
2112.05:325:33
2212.05:335:32
2312.05:335:32
2412.05:335:31
2511.95:335:30
2611.95:335:29
2711.95:335:28
2811.95:335:27
2911.95:335:27
3011.95:335:26

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.65 kWh/m².

For context, solar energy here swings from a low near 3.85 kWh/m² to a high of 6.46 kWh/m² in April across the year — September's 5.65 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.7Bright
145.7Bright
155.7Bright
165.6Bright
175.6Bright
185.6Bright
195.5Bright
205.5Bright
215.5Bright
225.4Bright
235.4Bright
245.4Bright
255.3Bright
265.3Bright
275.3Bright
285.2Bright
295.2Bright
305.1Bright
Planning a trip in September

Hazard calendar for Iriona

In seasonPeak

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

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

Iriona's rainy season runs October–January, 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 Iriona?

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

4.2
Sightseeing
8th-best month of the year
5.4
Beach & pool
5th-best month of the year

September is a reasonable time to visit Iriona for sightseeing.

What to pack for Iriona in September

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

In September, Iriona sees daytime highs around 29°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

Sea temperature near Iriona 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 18 km away) is warmest in September at about 29°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°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr28Warm
May28Tropical
Jun28Tropical
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Iriona 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 Iriona peaks around March 23 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMar 23UV 13Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Iriona 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 Iriona is worst in July — around 34 µg/m³ PM2.5 (moderate), about 5.5× the cleanest month (November, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1233 µg/m³Nov 236 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar11Good
Apr27Moderate
May31Moderate
Jun31Moderate
Jul34Moderate
Aug23Moderate
Sep14Moderate
Oct10Good
Nov6Good
Dec6Good
Location & terrain

Where is Iriona?

Iriona sits at 16.0°N, 85.1°W, 6 m above sea level, in Honduras. The nearest listed city is Tocoa, 102 km away.

TocoaDulce Nombre de CulmíSabáSonagueraGualacoCatacamasRoatanOlanchito

Topography around Iriona

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

Within 3 km, the terrain around Iriona has only modest variations in elevation — a maximum elevation change of 34 m around an average of 3 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 382 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,847 m.

The land around Iriona is covered by water (46%) and trees (23%) within 3 km, water (58%), trees (20%) and grassland (20%) within 16 km, and trees (43%) and water (42%) within 80 km.

3 km
34 m
16 km
382 m
80 km
1,847 m
treesgrasslandcroplandbare terrainwaterwetlandmangroves
September weather nearby: Tocoa 102 km · Dulce Nombre de Culmí 107 km · Sabá 136 km · Sonaguera 138 km · Gualaco 148 km · Catacamas 151 km · Roatan 159 km · Olanchito 167 km

Honduras travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$3,598
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
66%
of population, 2024
Homicide rate
31.4
per 100k, 2023
Road deaths
16.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
High
EF EPI 553
Religion
Evangelical 55%Roman Catholic 33%none 10%

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 Iriona (15.9678°, -85.0932°, elevation 6 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).