Thanlyin weather in September

In September, Thanlyin sees average daytime highs of 31°C and overnight lows near 26°C, with 359 mm of rain across 28.7 wet days and about 12.1 hours of daylight. It is the 9th-warmest and 4th-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 2% 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 Thanlyin's 9th-clearest and 8th-windiest month. For the whole year in context, see Thanlyin's year-round climate.

Daytime high: 31°; 9th warmest
Overnight low: 26°; 8th coldest
Rainfall: 359 mm; 28.7 wet days
Daylight: 12 h 06 min; 5:57 AM – 6:02 PM
Cloud cover: 90%; 9th clearest
Wind: 7 km/h; 8th windiest
Solar energy: 3.92 kWh/m²
Travel score: 2.3; out of 10

← August Thanlyin year-round climate October →Best places to visit in September

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

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 Thanlyin reaches about 31°C in the afternoon and slips back to 26°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 on par with August and about 1°C cooler than October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	32	32	32	32	32	32	32	32
Avg low (°C)	26	26	25	25	25	25	25	25	25	25	25	25	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26

	Avg high (°C)	Avg low (°C)
1	31	26
2	31	26
3	31	25
4	31	25
5	31	25
6	31	25
7	31	25
8	31	25
9	31	25
10	31	25
11	31	25
12	31	25
13	31	26
14	31	26
15	31	26
16	31	26
17	31	26
18	31	26
19	31	26
20	31	26
21	31	26
22	31	26
23	32	26
24	32	26
25	32	26
26	32	26
27	32	26
28	32	26
29	32	26
30	32	26

How September really feels in Thanlyin

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

20 feel dangerously hot (≥ 39°C)

Days feeling ≤ 0°C

wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Thanlyin weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 4th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	32° / 19°	4	0.7	11.1	5.0
Feb	35° / 20°	2	0.3	11.4	3.6
Mar	37° / 23°	11	1.8	11.9	2.3
Apr	37° / 26°	41	5	12.4	1.6
May	34° / 27°	271	22.4	12.8	1.9
Jun	31° / 26°	450	29.7	13	2.2
Jul	31° / 26°	484	30.6	12.9	2.3
Aug	31° / 26°	482	30.8	12.6	2.3
Sep	31° / 26°	359	28.7	12.1	2.3
Oct	32° / 25°	173	20.2	11.6	3.0
Nov	33° / 24°	35	4.5	11.2	4.4
Dec	32° / 21°	5	0.7	11	5.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 4% of September, with mostly cloudy or overcast conditions the remaining 95%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	1	1	1	1	1	1	1	2	2	2	3	3	3	3	3	4	4	4	6	6	7	7	9	9	10	11	11	14	14	15
Cloudier (%)	99	99	99	99	99	99	99	98	98	98	97	97	97	97	97	96	96	96	94	94	93	93	91	91	90	89	89	86	86	85

	Clearer (%)	Cloudier (%)
1	1	99
2	1	99
3	1	99
4	1	99
5	1	99
6	1	99
7	1	99
8	2	98
9	2	98
10	2	98
11	3	97
12	3	97
13	3	97
14	3	97
15	3	97
16	4	96
17	4	96
18	4	96
19	6	94
20	6	94
21	7	93
22	7	93
23	9	91
24	9	91
25	10	90
26	11	89
27	11	89
28	14	86
29	14	86
30	15	85

Chance of precipitation in September

Any precipitation

Thanlyin gets around 359 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 96% and peaks near 99% on the wettest days. The odds ease toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	99	99	99	99	99	99	99	98	98	98	98	98	97	97	97	97	96	96	95	95	94	93	93	92	92	91	90	90	89	88

	Rain chance (%)
1	99
2	99
3	99
4	99
5	99
6	99
7	99
8	98
9	98
10	98
11	98
12	98
13	97
14	97
15	97
16	97
17	96
18	96
19	95
20	95
21	94
22	93
23	93
24	92
25	92
26	91
27	90
28	90
29	89
30	88

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

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Miserable (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Miserable (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	8	8	8	8	8	8	8	8	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	8	calm
2	8	calm
3	8	calm
4	8	calm
5	8	calm
6	8	calm
7	8	calm
8	8	calm
9	7	calm
10	7	calm
11	7	calm
12	7	calm
13	7	calm
14	7	calm
15	7	calm
16	7	calm
17	7	calm
18	7	calm
19	7	calm
20	7	calm
21	7	calm
22	7	calm
23	7	calm
24	7	calm
25	7	calm
26	7	calm
27	7	calm
28	7	calm
29	7	calm
30	7	calm

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 5:55 AM to 5:58 AM, and sunset from 6:15 PM to 5:50 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	12.3	12.3	12.3	12.3	12.3	12.3	12.2	12.2	12.2	12.2	12.2	12.2	12.1	12.1	12.1	12.1	12.1	12.1	12.0	12.0	12.0	12.0	12.0	12.0	11.9	11.9	11.9	11.9	11.9	11.9
Sunrise (AM)	5:55	5:55	5:55	5:55	5:55	5:55	5:56	5:56	5:56	5:56	5:56	5:56	5:56	5:56	5:56	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:58	5:58	5:58	5:58	5:58	5:58
Sunset (PM)	6:15	6:14	6:13	6:12	6:11	6:11	6:10	6:09	6:08	6:07	6:06	6:06	6:05	6:04	6:03	6:02	6:01	6:00	6:00	5:59	5:58	5:57	5:56	5:55	5:54	5:54	5:53	5:52	5:51	5:50

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.3	5:55	6:15
2	12.3	5:55	6:14
3	12.3	5:55	6:13
4	12.3	5:55	6:12
5	12.3	5:55	6:11
6	12.3	5:55	6:11
7	12.2	5:56	6:10
8	12.2	5:56	6:09
9	12.2	5:56	6:08
10	12.2	5:56	6:07
11	12.2	5:56	6:06
12	12.2	5:56	6:06
13	12.1	5:56	6:05
14	12.1	5:56	6:04
15	12.1	5:56	6:03
16	12.1	5:57	6:02
17	12.1	5:57	6:01
18	12.1	5:57	6:00
19	12.0	5:57	6:00
20	12.0	5:57	5:59
21	12.0	5:57	5:58
22	12.0	5:57	5:57
23	12.0	5:57	5:56
24	12.0	5:57	5:55
25	11.9	5:58	5:54
26	11.9	5:58	5:54
27	11.9	5:58	5:53
28	11.9	5:58	5:52
29	11.9	5:58	5:51
30	11.9	5:58	5:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.92 kWh/m².

For context, solar energy here swings from a low near 3.25 kWh/m² to a high of 6.8 kWh/m² in April across the year — September's 3.92 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	3.6	3.6	3.6	3.6	3.6	3.6	3.7	3.7	3.7	3.7	3.8	3.8	3.8	3.8	3.9	3.9	3.9	4.0	4.0	4.0	4.1	4.1	4.2	4.2	4.2	4.3	4.3	4.3	4.4	4.4
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	3.6	Moderate
2	3.6	Moderate
3	3.6	Moderate
4	3.6	Moderate
5	3.6	Moderate
6	3.6	Moderate
7	3.7	Moderate
8	3.7	Moderate
9	3.7	Moderate
10	3.7	Moderate
11	3.8	Moderate
12	3.8	Moderate
13	3.8	Moderate
14	3.8	Moderate
15	3.9	Moderate
16	3.9	Moderate
17	3.9	Moderate
18	4.0	Moderate
19	4.0	Bright
20	4.0	Bright
21	4.1	Bright
22	4.1	Bright
23	4.2	Bright
24	4.2	Bright
25	4.2	Bright
26	4.3	Bright
27	4.3	Bright
28	4.3	Bright
29	4.4	Bright
30	4.4	Bright

Planning a trip in September

Hazard calendar for Thanlyin

In seasonPeak

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

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

Thanlyin's monsoon runs May–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 Thanlyin?

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

2.3

Sightseeing

6th-best month of the year

3.5

Beach & pool

9th-best month of the year

September is a weaker month for outdoor sightseeing in Thanlyin.

What to pack for Thanlyin in September

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

In September, Thanlyin sees daytime highs around 31°C and nights near 26°C. Pack light clothes and rain gear. About 29 days see rain.

light clothesrain gear

Sea temperature near Thanlyin in September

The nearest coast averages about 28°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 44 km away) is warmest in April at about 30°C and coldest in January near 27°C.

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	27	28	29	30	30	29	29	28	28	29	29	27
Comfort	Warm	Warm	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Warm

	Sea temperature (°C)	Comfort
Jan	27	Warm
Feb	28	Warm
Mar	29	Tropical
Apr	30	Tropical
May	30	Tropical
Jun	29	Tropical
Jul	29	Tropical
Aug	28	Tropical
Sep	28	Tropical
Oct	29	Tropical
Nov	29	Tropical
Dec	27	Warm

UV index in Thanlyin 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 Thanlyin peaks around August 12 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 8 (very high).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	8	10	9	10	12	12	12	13	11	10	9	7
Level	Very high	Very high	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	8	Very high
Feb	10	Very high
Mar	9	Very high
Apr	10	Very high
May	12	Extreme
Jun	12	Extreme
Jul	12	Extreme
Aug	13	Extreme
Sep	11	Extreme
Oct	10	Extreme
Nov	9	Very high
Dec	7	Very high

Air quality in Thanlyin 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 Thanlyin is worst in February — around 41 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (June, 20 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	39	41	40	31	23	20	20	21	20	24	33	37
Level	Poor	Poor	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Poor

	PM2.5 (µg/m³)	Level
Jan	39	Poor
Feb	41	Poor
Mar	40	Poor
Apr	31	Moderate
May	23	Moderate
Jun	20	Moderate
Jul	20	Moderate
Aug	21	Moderate
Sep	20	Moderate
Oct	24	Moderate
Nov	33	Moderate
Dec	37	Poor

Location & terrain

Where is Thanlyin?

Thanlyin sits at 16.8°N, 96.2°E, 24 m above sea level, in Myanmar. The nearest listed city is Thanhlyin, 1.0 km away.

Topography around Thanlyin

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

Within 3 km, the terrain around Thanlyin has only modest variations in elevation — a maximum elevation change of 33 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 64 m; within 80 km, significant variations in elevation — a maximum elevation change of 298 m.

The land around Thanlyin is covered by trees (34%) and cropland (20%) within 3 km, cropland (46%) within 16 km, and cropland (48%) and water (31%) within 80 km.

3 km

33 m

trees 34%

16 km

64 m

cropland 46%

80 km

298 m

cropland 48%

treesgrasslandcroplandartificial surfacesbare terrainwater

← August Thanlyin year-round climate October →Best places to visit in September

September weather nearby: Thanhlyin 1.0 km · Botataung 8.0 km · Pazundaung 8.0 km · Mingala Tangnyunt 8.0 km · Yangon 10 km · Myenigon 12 km · Sangyoung 13 km · Ahlone 13 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

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 Thanlyin (16.7689°, 96.245°, elevation 24 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).

	Avg high (°C)	Avg low (°C)
1	31	26
2	31	26
3	31	25
4	31	25
5	31	25
6	31	25
7	31	25
8	31	25
9	31	25
10	31	25
11	31	25
12	31	25
13	31	26
14	31	26
15	31	26
16	31	26
17	31	26
18	31	26
19	31	26
20	31	26
21	31	26
22	31	26
23	32	26
24	32	26
25	32	26
26	32	26
27	32	26
28	32	26
29	32	26
30	32	26

	Clearer (%)	Cloudier (%)
1	1	99
2	1	99
3	1	99
4	1	99
5	1	99
6	1	99
7	1	99
8	2	98
9	2	98
10	2	98
11	3	97
12	3	97
13	3	97
14	3	97
15	3	97
16	4	96
17	4	96
18	4	96
19	6	94
20	6	94
21	7	93
22	7	93
23	9	91
24	9	91
25	10	90
26	11	89
27	11	89
28	14	86
29	14	86
30	15	85

	Rain chance (%)
1	99
2	99
3	99
4	99
5	99
6	99
7	99
8	98
9	98
10	98
11	98
12	98
13	97
14	97
15	97
16	97
17	96
18	96
19	95
20	95
21	94
22	93
23	93
24	92
25	92
26	91
27	90
28	90
29	89
30	88

	Miserable (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Avg high (°C)	Avg low (°C)
1	31	26
2	31	26
3	31	25
4	31	25
5	31	25
6	31	25
7	31	25
8	31	25
9	31	25
10	31	25
11	31	25
12	31	25
13	31	26
14	31	26
15	31	26
16	31	26
17	31	26
18	31	26
19	31	26
20	31	26
21	31	26
22	31	26
23	32	26
24	32	26
25	32	26
26	32	26
27	32	26
28	32	26
29	32	26
30	32	26

	Clearer (%)	Cloudier (%)
1	1	99
2	1	99
3	1	99
4	1	99
5	1	99
6	1	99
7	1	99
8	2	98
9	2	98
10	2	98
11	3	97
12	3	97
13	3	97
14	3	97
15	3	97
16	4	96
17	4	96
18	4	96
19	6	94
20	6	94
21	7	93
22	7	93
23	9	91
24	9	91
25	10	90
26	11	89
27	11	89
28	14	86
29	14	86
30	15	85

	Rain chance (%)
1	99
2	99
3	99
4	99
5	99
6	99
7	99
8	98
9	98
10	98
11	98
12	98
13	97
14	97
15	97
16	97
17	96
18	96
19	95
20	95
21	94
22	93
23	93
24	92
25	92
26	91
27	90
28	90
29	89
30	88

	Miserable (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Avg high (°C)	Avg low (°C)
1	31	26
2	31	26
3	31	25
4	31	25
5	31	25
6	31	25
7	31	25
8	31	25
9	31	25
10	31	25
11	31	25
12	31	25
13	31	26
14	31	26
15	31	26
16	31	26
17	31	26
18	31	26
19	31	26
20	31	26
21	31	26
22	31	26
23	32	26
24	32	26
25	32	26
26	32	26
27	32	26
28	32	26
29	32	26
30	32	26

	Clearer (%)	Cloudier (%)
1	1	99
2	1	99
3	1	99
4	1	99
5	1	99
6	1	99
7	1	99
8	2	98
9	2	98
10	2	98
11	3	97
12	3	97
13	3	97
14	3	97
15	3	97
16	4	96
17	4	96
18	4	96
19	6	94
20	6	94
21	7	93
22	7	93
23	9	91
24	9	91
25	10	90
26	11	89
27	11	89
28	14	86
29	14	86
30	15	85

	Rain chance (%)
1	99
2	99
3	99
4	99
5	99
6	99
7	99
8	98
9	98
10	98
11	98
12	98
13	97
14	97
15	97
16	97
17	96
18	96
19	95
20	95
21	94
22	93
23	93
24	92
25	92
26	91
27	90
28	90
29	89
30	88

	Miserable (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100