Ann weather in September

In September, Ann sees average daytime highs of 30°C and overnight lows near 24°C, with 422 mm of rain across 28.7 wet days and about 12.1 hours of daylight. It is the 7th-warmest and 4th-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 1% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 24 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Ann's 9th-clearest and 8th-windiest month. For the whole year in context, see Ann's year-round climate.

Daytime high
30°
7th warmest
Overnight low
24°
8th coldest
Rainfall
422 mm
28.7 wet days
Daylight
12 h 06 min
6:05 AM – 6:11 PM
Cloud cover
88%
9th clearest
Wind
5 km/h
8th windiest
Solar energy
3.87 kWh/m²
Travel score
2.7
out of 10

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 Ann 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 27°C and 32°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12924
22924
32924
42924
52924
62924
72924
82924
92924
102924
112924
122924
133024
143024
153024
163024
173024
183024
193024
203024
213024
223024
233024
243024
253024
263024
273024
283024
293024
303024

How September really feels in Ann

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.

Ann weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 13°60.610.97.7
Feb31° / 15°40.411.36.4
Mar33° / 19°61.311.94.9
Apr34° / 22°234.412.44.0
May32° / 24°27121.512.93.0
Jun29° / 24°76429.513.22.7
Jul29° / 24°76130.713.12.8
Aug29° / 24°63730.712.72.8
Sep30° / 24°42228.712.12.7
Oct31° / 23°18520.911.53.5
Nov31° / 20°354.311.15.6
Dec29° / 16°100.810.87.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 5% of September, with mostly cloudy or overcast conditions the remaining 93%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1298
2397
3397
4397
5397
6397
7496
8496
9496
10496
11496
12496
13496
14496
15496
16496
17496
18595
19694
20694
21694
22793
23892
24991
25991
261288
271387
281486
291585
301783

Chance of precipitation in September

Any precipitation

Ann gets around 422 mm of rain over 28.7 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 95% and peaks near 99% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
199
298
398
498
598
698
798
897
997
1097
1197
1297
1397
1497
1596
1696
1796
1896
1996
2095
2195
2295
2394
2493
2593
2692
2791
2890
2989
3088

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 85% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
11189
21288
31288
41387
51387
61486
71486
81486
91486
101486
111486
121486
131486
141486
151486
161486
171486
181486
191486
201486
211486
221486
231585
241585
251684
261783
271882
281981
292080
302179

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 24 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over September. Sunrise moves from 6:02 AM to 6:08 AM, and sunset from 6:25 PM to 5:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:026:25
212.46:026:25
312.46:026:24
412.36:026:23
512.36:036:22
612.36:036:21
712.36:036:20
812.36:036:19
912.26:036:18
1012.26:046:17
1112.26:046:16
1212.26:046:15
1312.26:046:14
1412.16:046:13
1512.16:056:12
1612.16:056:11
1712.16:056:11
1812.16:056:10
1912.16:056:09
2012.06:066:08
2112.06:066:07
2212.06:066:06
2312.06:066:05
2412.06:066:04
2511.96:076:03
2611.96:076:02
2711.96:076:01
2811.96:076:00
2911.96:085:59
3011.86:085:58

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.87 kWh/m².

For context, solar energy here swings from a low near 2.96 kWh/m² to a high of 6.55 kWh/m² in March across the year — September's 3.87 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.5Moderate
43.6Moderate
53.6Moderate
63.6Moderate
73.6Moderate
83.6Moderate
93.7Moderate
103.7Moderate
113.7Moderate
123.8Moderate
133.8Moderate
143.8Moderate
153.9Moderate
163.9Moderate
173.9Moderate
183.9Moderate
194.0Moderate
204.0Bright
214.0Bright
224.1Bright
234.1Bright
244.1Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Ann

In seasonPeak

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

Ann sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

Ann's monsoon runs June–September, when most of the year's rain falls.

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

Is September a good time to visit Ann?

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

2.7
Sightseeing
11th-best month of the year
3.7
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Ann.

What to pack for Ann in September

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

In September, Ann sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. About 29 days see rain.

light clothesrain gear

Sea temperature near Ann 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 48 km away) is warmest in May at about 30°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°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar27Warm
Apr29Tropical
May30Tropical
Jun29Tropical
Jul29Tropical
Aug28Tropical
Sep29Tropical
Oct30Tropical
Nov29Tropical
Dec28Warm

UV index in Ann in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ann peaks around August 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 11UV 13Dec 20UV 7
UV index (midday)Level
Jan7Very high
Feb9Very high
Mar10Extreme
Apr10Very high
May12Extreme
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in Ann 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 Ann is worst in April — around 44 µg/m³ PM2.5 (poor), about 5.3× the cleanest month (November, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateGoodApr 1243 µg/m³Nov 129 µg/m³
PM2.5 (µg/m³)Level
Jan22Moderate
Feb30Moderate
Mar39Poor
Apr44Poor
May29Moderate
Jun17Moderate
Jul17Moderate
Aug17Moderate
Sep12Moderate
Oct10Good
Nov8Good
Dec14Moderate
Location & terrain

Where is Ann?

Ann sits at 19.8°N, 94.0°E, 26 m above sea level, in Myanmar. The nearest listed city is Kyaukpyu, 66 km away.

Mrauk USittwe

Topography around Ann

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

Within 3 km, the terrain around Ann has only modest variations in elevation — a maximum elevation change of 246 m around an average of 47 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 696 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,963 m.

The land around Ann is covered by trees (70%) and grassland (20%) within 3 km, trees (88%) within 16 km, and trees (64%) within 80 km.

3 km
246 m
16 km
696 m
80 km
1,963 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: Kyaukpyu 66 km · Minbu 97 km · Magway 100 km · Taungup 106 km · Manaung 110 km · Yenangyaung 114 km · Mrauk U 126 km · Sittwe 126 km

Myanmar travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type A / C / D / F / G / I
230 V · 50 Hz
Prices
≈ 38% of US
price level, 2025
GDP per capita
$1,489
2025
Happiness
4.3 / 10
World Happiness, 2025
Safe drinking water
60%
of population, 2024
Homicide rate
2.6
per 100k, 2023
Road deaths
20.4
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 444
Religion
Buddhist 88%Christian 6%Muslim 4%Animist 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 Ann (19.7954°, 94.0479°, elevation 26 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).