Blitar weather in September

In September, Blitar sees average daytime highs of 29°C and overnight lows near 19°C, with 57 mm of rain across 7.4 wet days and about 12 hours of daylight. It is the 6th-warmest and 11th-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 16% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 48 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Blitar's 4th-clearest and 1st-windiest month. For the whole year in context, see Blitar's year-round climate.

Daytime high
29°
6th warmest
Overnight low
19°
3rd coldest
Rainfall
57 mm
7.4 wet days
Daylight
12 hours
5:27 AM – 5:24 PM
Cloud cover
63%
4th clearest
Wind
8 km/h
1st windiest
Solar energy
5.84 kWh/m²
Travel score
5.7
out of 10

Blitar is city in East Java Province, Indonesia.

Density
4,948/km²
people per km²
Founded
1906

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

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 Blitar reaches about 29°C in the afternoon and slips back to 19°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, September runs on par with August and on par with October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12919
22919
32919
42919
52919
62919
72919
82919
92919
102919
112919
122919
132919
142919
152919
162919
172919
182919
192919
202920
212920
222920
232920
242920
252920
262920
272920
282920
292920
302920

How September really feels in Blitar

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Blitar weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 22°34229.312.43.0
Feb29° / 22°31626.912.32.9
Mar29° / 22°3842912.13.0
Apr29° / 22°32827.111.83.1
May29° / 21°15518.711.64.3
Jun29° / 20°11112.711.55.3
Jul28° / 19°617.911.66.5
Aug28° / 18°285.211.76.6
Sep29° / 19°577.4125.7
Oct29° / 21°1831712.24.4
Nov29° / 22°40326.412.43.2
Dec29° / 22°41128.312.53.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 29% of September, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14951
24951
35050
45050
55050
64852
74852
84852
94852
104852
114654
124654
134654
144555
154555
164456
174456
184357
194456
204456
214357
224357
234357
244258
254258
264258
274258
284159
294159
304060

Chance of precipitation in September

Any precipitation

Blitar gets around 57 mm of rain over 7.4 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 26% and peaks near 35% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
120
220
320
420
520
620
720
820
921
1021
1121
1222
1323
1424
1524
1625
1726
1827
1928
2028
2129
2230
2330
2431
2532
2633
2733
2834
2935
3035

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 70% of days. Sticky, muggy-or-worse air turns up on roughly 89% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11137313
21137313
31137313
41137412
51137412
61137412
71137412
81137313
91137313
101137214
111137214
121137115
131137016
141136917
150136918
160126919
170126919
180116920
190106921
200106822
21096922
22086923
23086824
24086725
25076825
26076726
27076627
28066628
29066529
30066430

Wind in September

Winds average 8 km/h in September, the windiest month of the year.

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

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 48 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over September. Sunrise moves from 5:36 AM to 5:19 AM, and sunset from 5:26 PM to 5:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:365:26
211.95:355:26
311.95:355:26
411.95:345:26
511.95:335:26
611.95:335:26
711.95:325:26
811.95:325:25
911.95:315:25
1011.95:315:25
1111.95:305:25
1211.95:295:25
1311.95:295:25
1411.95:285:25
1511.95:285:24
1612.05:275:24
1712.05:265:24
1812.05:265:24
1912.05:255:24
2012.05:255:24
2112.05:245:24
2212.05:235:23
2312.05:235:23
2412.05:225:23
2512.05:225:23
2612.05:215:23
2712.05:205:23
2812.05:205:23
2912.15:195:23
3012.15:195:23

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.84 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.39 kWh/m² to a high of 5.84 kWh/m² in September across the year — September's 5.84 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
Planning a trip in September

Hazard calendar for Blitar

In seasonPeak

None of Blitar's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Blitar sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Blitar's rainy season runs November–April, when most of the year's rain falls.

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

Is September a good time to visit Blitar?

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

5.7
Sightseeing
3rd-best month of the year
7.2
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Blitar for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Blitar in September

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

In September, Blitar sees daytime highs around 29°C and nights near 19°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

Sea temperature near Blitar in September

The nearest coast averages about 25°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 31 km away) is warmest in March at about 29°C and coldest in August 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
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug25Warm
Sep25Warm
Oct26Warm
Nov28Warm
Dec29Tropical

UV index in Blitar in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Blitar peaks around March 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 16 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 17UV 14Jun 16UV 8
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar14Extreme
Apr13Extreme
May10Very high
Jun7Very high
Jul10Very high
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov10Very high
Dec13Extreme

Air quality in Blitar 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 Blitar is worst in April — around 43 µg/m³ PM2.5 (poor), about 1.7× the cleanest month (September, 25 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 1843 µg/m³Sep 1625 µg/m³
PM2.5 (µg/m³)Level
Jan34Moderate
Feb33Moderate
Mar39Poor
Apr43Poor
May41Poor
Jun37Poor
Jul31Moderate
Aug27Moderate
Sep25Moderate
Oct27Moderate
Nov30Moderate
Dec30Moderate
Location & terrain

Where is Blitar?

Blitar sits at 8.1°S, 112.2°E, 180 m above sea level, in Indonesia. The nearest listed city is Ngunut, 17 km away.

Topography around Blitar

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

Within 3 km, the terrain around Blitar has only modest variations in elevation — a maximum elevation change of 87 m around an average of 177 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 547 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,307 m.

The land around Blitar is covered by artificial surfaces (47%), trees (27%) and cropland (24%) within 3 km, trees (64%) and cropland (21%) within 16 km, and trees (53%) and water (24%) within 80 km.

3 km
87 m
16 km
547 m
80 km
3,307 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Ngunut 17 km · Kedungwaru 28 km · Tulungagung 29 km · Boyolangu 30 km · Sumberpucung 35 km · Kediri 35 km · Pare 37 km · Gampengrejo 40 km

Indonesia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,060
2025
Happiness
5.6 / 10
World Happiness, 2025
Safe drinking water
30%
of population, 2024
Homicide rate
0.3
per 100k, 2022
Road deaths
11.3
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 471
Religion
Muslim 87%Protestant 8%Roman Catholic 3%Hindu 2%

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 Blitar (-8.0983°, 112.1681°, elevation 180 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).