Ninh Hòa weather in September

In September, Ninh Hòa sees average daytime highs of 31°C and overnight lows near 24°C, with 189 mm of rain across 22.7 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 32°C in the first days to 30°C by the end. The sky is clear or mostly clear about 5% 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 Ninh Hòa's 12th-clearest and 11th-windiest month. For the whole year in context, see Ninh Hòa's year-round climate.

Daytime high
31°
5th warmest
Overnight low
24°
8th coldest
Rainfall
189 mm
22.7 wet days
Daylight
12 h 06 min
5:36 AM – 5:40 PM
Cloud cover
84%
12th clearest
Wind
4 km/h
11th windiest
Solar energy
4.93 kWh/m²
Travel score
2.9
out of 10

Ninh Hòa is town in South Central Coast, Vietnam.

Density
192/km²
people per km²
Founded
2010

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 32°C in the first days to 30°C by the end.

A typical September day in Ninh Hòa reaches about 31°C in the afternoon and slips back to 24°C overnight — a 7°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 2°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13225
23225
33225
43225
53225
63225
73224
83224
93224
103224
113124
123124
133124
143124
153124
163124
173124
183124
193124
203124
213024
223024
233024
243024
253024
263024
273024
283024
293024
303024

How September really feels in Ninh Hòa

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.

Ninh Hòa weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 20°611011.36.6
Feb27° / 20°306.311.67.0
Mar29° / 22°428.211.96.1
Apr30° / 24°6611.712.34.6
May32° / 25°15921.412.63.1
Jun32° / 25°10419.412.72.9
Jul32° / 25°8817.612.73.1
Aug32° / 25°931712.43.0
Sep31° / 24°18922.712.12.9
Oct29° / 23°26926.111.73.6
Nov27° / 22°27520.911.44.7
Dec25° / 21°19916.711.35.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 7% of September, with mostly cloudy or overcast conditions the remaining 88%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11387
21486
31387
41387
51288
61288
71288
81288
91090
101090
111090
121090
131189
141090
151090
161189
171189
181189
191288
201288
211288
221387
231486
241486
251486
261585
271486
281486
291486
301486

Chance of precipitation in September

Any precipitation

Ninh Hòa gets around 189 mm of rain over 22.7 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 76% and peaks near 87% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
164
264
365
465
565
666
767
868
969
1070
1171
1273
1374
1475
1576
1678
1779
1880
1981
2082
2182
2283
2384
2485
2585
2686
2786
2887
2987
3087

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 87% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
122762
222762
322762
422762
521772
620782
720782
819792
918802
1016822
1115832
1213852
1312862
1411872
159892
168902
177912
186913
195923
204933
213943
223943
232953
242953
252953
262953
272953
282953
292953
302953

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

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 5:36 AM to 5:36 AM, and sunset from 5:51 PM to 5:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:365:51
212.25:365:50
312.25:365:49
412.25:365:48
512.25:365:48
612.25:365:47
712.25:365:46
812.25:365:46
912.25:365:45
1012.15:365:44
1112.15:365:44
1212.15:365:43
1312.15:365:42
1412.15:365:41
1512.15:365:41
1612.15:365:40
1712.15:365:39
1812.05:365:38
1912.05:365:38
2012.05:365:37
2112.05:365:36
2212.05:365:36
2312.05:365:35
2412.05:365:34
2512.05:365:33
2611.95:365:33
2711.95:365:32
2811.95:365:31
2911.95:365:31
3011.95:365:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.93 kWh/m².

For context, solar energy here swings from a low near 3.15 kWh/m² to a high of 6.13 kWh/m² in April across the year — September's 4.93 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.2Bright
65.2Bright
75.2Bright
85.1Bright
95.1Bright
105.0Bright
115.0Bright
125.0Bright
134.9Bright
144.9Bright
154.9Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.6Bright
Planning a trip in September

Hazard calendar for Ninh Hòa

In seasonPeak

In September, Ninh Hòa sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

Ninh Hòa sits in the Pacific typhoon belt; the season peaks July–October.

Ninh Hòa's rainy season runs September–December, when most of the year's rain falls.

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

Is September a good time to visit Ninh Hòa?

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

2.9
Sightseeing
11th-best month of the year
4.4
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Ninh Hòa.

What to pack for Ninh Hòa in September

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

In September, Ninh Hòa sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

Sea temperature near Ninh Hòa 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 30 km away) is warmest in September at about 29°C and coldest in January 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
Mar26Warm
Apr27Warm
May29Tropical
Jun29Tropical
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct28Warm
Nov27Warm
Dec26Warm

UV index in Ninh Hòa 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 Ninh Hòa peaks around August 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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 highAug 18UV 13Dec 16UV 9
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar13Extreme
Apr13Extreme
May13Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct12Extreme
Nov10Very high
Dec8Very high

Air quality in Ninh Hòa 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 Ninh Hòa is worst in April — around 31 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 17 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1331 µg/m³Dec 1317 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb20Moderate
Mar28Moderate
Apr31Moderate
May24Moderate
Jun21Moderate
Jul19Moderate
Aug19Moderate
Sep22Moderate
Oct23Moderate
Nov18Moderate
Dec17Moderate
Location & terrain

Where is Ninh Hòa?

Ninh Hòa sits at 12.5°N, 109.1°E, 7 m above sea level, in Vietnam. The nearest listed city is Nha Trang, 28 km away.

Da LatKhánh HảiBuôn Hồ

Topography around Ninh Hòa

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

Within 3 km, the terrain around Ninh Hòa has only modest variations in elevation — a maximum elevation change of 87 m around an average of 8 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,345 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,408 m.

The land around Ninh Hòa is covered by cropland (38%), artificial surfaces (29%) and trees (28%) within 3 km, trees (48%) and cropland (22%) within 16 km, and trees (49%) and water (34%) within 80 km.

3 km
87 m
16 km
1,345 m
80 km
2,408 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Nha Trang 28 km · Tu Bông 36 km · Cam Ranh 64 km · Tuy Hòa 70 km · Phước An 93 km · Da Lat 96 km · Khánh Hải 101 km · Buôn Hồ 103 km

Vietnam travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C / F
220 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,066
2025
Happiness
6.4 / 10
World Happiness, 2025
Safe drinking water
59%
of population, 2024
Homicide rate
1.5
per 100k, 2011
Road deaths
30.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 500
Religion
none 86%Catholic 6%Buddhist 6%Protestant 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 Ninh Hòa (12.4919°, 109.1249°, 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).