Riohacha weather in September

In September, Riohacha sees average daytime highs of 31°C and overnight lows near 25°C, with 165 mm of rain across 22.4 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 2nd-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 8% of the time in September, and the air most often feels miserable.

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 Riohacha's 11th-clearest and 11th-windiest month. For the whole year in context, see Riohacha's year-round climate.

Daytime high
31°
5th warmest
Overnight low
25°
8th coldest
Rainfall
165 mm
22.4 wet days
Daylight
12 h 06 min
5:44 AM – 5:48 PM
Cloud cover
81%
11th clearest
Wind
11 km/h
11th windiest
Solar energy
5.68 kWh/m²
Travel score
2.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

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

A typical September day in Riohacha reaches about 31°C in the afternoon and slips back to 25°C overnight — a 6°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, September runs about 1°C cooler than August and about 1°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13226
23226
33226
43226
53226
63226
73226
83226
93226
103226
113226
123226
133126
143126
153126
163125
173125
183125
193125
203125
213125
223125
233125
243125
253125
263125
273125
283125
293125
303125

How September really feels in Riohacha

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.

Riohacha weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°133.711.45.7
Feb31° / 24°102.511.65.6
Mar31° / 25°174.211.95.1
Apr31° / 25°489.512.24.1
May31° / 26°13917.612.53.3
Jun32° / 26°8112.512.73.4
Jul33° / 26°498.812.63.5
Aug32° / 26°9715.712.43.1
Sep31° / 25°16522.412.12.9
Oct30° / 25°18925.411.73.0
Nov30° / 25°12719.811.53.7
Dec30° / 25°459.911.35.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 10% of September, with mostly cloudy or overcast conditions the remaining 82%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11981
22080
32080
42179
52080
62080
72179
82179
92179
102179
112179
122179
132179
142080
152080
161981
171882
181783
191783
201684
211684
221585
231585
241585
251585
261585
271585
281585
291585
301585

Chance of precipitation in September

Any precipitation

Riohacha gets around 165 mm of rain over 22.4 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 74% and peaks near 82% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
163
264
364
465
565
666
767
867
968
1069
1170
1271
1372
1473
1574
1675
1776
1877
1978
2079
2180
2280
2381
2481
2582
2682
2782
2882
2982
3082

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 70% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
13763
23664
33565
43466
53466
63367
73367
83268
93268
103169
113169
123169
133169
143070
153070
162971
172971
182971
192872
202872
212773
222773
232773
242773
252773
262773
272773
282773
292872
302872

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 10 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
512calm
612calm
712calm
812calm
912calm
1012calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 5:45 AM to 5:44 AM, and sunset from 5:58 PM to 5:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:455:58
212.25:455:57
312.25:455:57
412.25:455:56
512.25:455:55
612.25:445:55
712.25:445:54
812.25:445:53
912.15:445:53
1012.15:445:52
1112.15:445:51
1212.15:445:51
1312.15:445:50
1412.15:445:49
1512.15:445:49
1612.15:445:48
1712.15:445:47
1812.05:445:46
1912.05:445:46
2012.05:445:45
2112.05:445:44
2212.05:445:44
2312.05:445:43
2412.05:445:42
2512.05:445:42
2612.05:445:41
2711.95:445:40
2811.95:445:40
2911.95:445:39
3011.95:445:38

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.68 kWh/m².

For context, solar energy here swings from a low near 4.79 kWh/m² to a high of 6.23 kWh/m² in July across the year — September's 5.68 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.0Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.6Bright
195.6Bright
205.6Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
Planning a trip in September

Hazard calendar for Riohacha

In seasonPeak

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

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

Riohacha's rainy season runs May–May, 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 Riohacha?

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
4.5
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Riohacha.

What to pack for Riohacha in September

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

In September, Riohacha sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

Sea temperature near Riohacha 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 offshore is warmest in September at about 29°C and coldest in February near 25°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar25Warm
Apr26Warm
May27Warm
Jun28Warm
Jul27Warm
Aug28Warm
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Riohacha 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 Riohacha peaks around April 13 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 highApr 13UV 13Dec 13UV 9
UV index (midday)Level
Jan11Extreme
Feb12Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec9Very high

Air quality in Riohacha 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 Riohacha is worst in June — around 30 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (January, 11 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 1530 µg/m³Jan 1011 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb15Moderate
Mar22Moderate
Apr25Moderate
May28Moderate
Jun30Moderate
Jul27Moderate
Aug28Moderate
Sep19Moderate
Oct16Moderate
Nov13Moderate
Dec11Good
Location & terrain

Where is Riohacha?

Riohacha sits at 11.5°N, 72.9°W, 7 m above sea level, in Colombia. The nearest listed city is Albania, 55 km away.

VillanuevaValledupar

Topography around Riohacha

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

Within 3 km, the terrain around Riohacha has only modest variations in elevation — a maximum elevation change of 25 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 46 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,978 m.

The land around Riohacha is covered by artificial surfaces (39%) and water (31%) within 3 km, water (43%) and shrubs (34%) within 16 km, and water (36%), trees (32%) and shrubs (24%) within 80 km.

3 km
25 m
16 km
46 m
80 km
3,978 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: Albania 55 km · Hatonuevo 55 km · Barrancas 66 km · Fonseca 73 km · Maicao 75 km · San Juan del Cesar 87 km · Villanueva 104 km · Valledupar 126 km

Colombia travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B
120 / 240 V · 60 Hz
Prices
≈ 38% of US
price level, 2025
GDP per capita
$8,562
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
74%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
15.4
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 480
Religion
Roman Catholic 64%Protestant 17%none 14%atheist 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 Riohacha (11.5444°, -72.9072°, elevation 7 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).