Mulia weather in September
In September, Mulia sees average daytime highs of 18°C and overnight lows near 10°C, with 502 mm of rain across 29.6 wet days and about 12 hours of daylight. It is the 9th-warmest and 6th-wettest month of the year here.
Day-to-day highs hold fairly steady near 18°C through the month. The sky is clear or mostly clear about 0% of the time in September, and the air most often feels dry.
Daylight stretches from about 11 h 54 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Mulia's 4th-clearest and 8th-windiest month. For the whole year in context, see Mulia's year-round climate.
- Daytime high
- 18°
- 9th warmest
- Overnight low
- 10°
- 3rd coldest
- Rainfall
- 502 mm
- 29.6 wet days
- Daylight
- 12 hours
- 5:43 AM – 5:42 PM
- Cloud cover
- 92%
- 4th clearest
- Wind
- 3 km/h
- 8th windiest
- Solar energy
- 4.25 kWh/m²
- Travel score
- 3.0
- out of 10
Temperature in September
Day-to-day highs hold fairly steady near 18°C through the month.
A typical September day in Mulia reaches about 18°C in the afternoon and slips back to 10°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 20°C. Set against its neighbours, September runs on par with August and on par with 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) | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 |
| Avg low (°C) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 18 | 10 |
| 2 | 18 | 10 |
| 3 | 18 | 10 |
| 4 | 18 | 10 |
| 5 | 18 | 10 |
| 6 | 18 | 10 |
| 7 | 18 | 10 |
| 8 | 18 | 10 |
| 9 | 18 | 10 |
| 10 | 18 | 10 |
| 11 | 18 | 10 |
| 12 | 18 | 10 |
| 13 | 18 | 10 |
| 14 | 18 | 10 |
| 15 | 18 | 10 |
| 16 | 18 | 10 |
| 17 | 18 | 10 |
| 18 | 18 | 10 |
| 19 | 18 | 10 |
| 20 | 18 | 10 |
| 21 | 18 | 10 |
| 22 | 18 | 10 |
| 23 | 18 | 10 |
| 24 | 18 | 10 |
| 25 | 18 | 10 |
| 26 | 18 | 10 |
| 27 | 18 | 10 |
| 28 | 18 | 10 |
| 29 | 19 | 10 |
| 30 | 19 | 10 |
Mulia weather by month
How September compares with the rest of the year at a glance. September is the 9th-warmest and 6th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 19° / 10° | 519 | 30.5 | 12.2 | 3.0 |
| Feb | 19° / 10° | 604 | 27.9 | 12.1 | 3.0 |
| Mar | 19° / 10° | 640 | 30.8 | 12 | 3.0 |
| Apr | 19° / 10° | 540 | 29.9 | 11.9 | 3.0 |
| May | 19° / 10° | 449 | 30.4 | 11.8 | 3.1 |
| Jun | 18° / 10° | 425 | 29.5 | 11.8 | 3.0 |
| Jul | 18° / 10° | 415 | 29.8 | 11.8 | 3.0 |
| Aug | 18° / 10° | 438 | 30.2 | 11.9 | 3.1 |
| Sep | 18° / 10° | 502 | 29.6 | 12 | 3.0 |
| Oct | 19° / 10° | 482 | 30.4 | 12.1 | 3.1 |
| Nov | 19° / 10° | 439 | 29.8 | 12.2 | 3.0 |
| Dec | 19° / 10° | 524 | 30.9 | 12.2 | 3.0 |
Cloud cover in September
The sky is clear or mostly clear about 0% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 1% of September, with mostly cloudy or overcast conditions the remaining 99%.
| 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 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 |
| Cloudier (%) | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 98 | 98 | 98 | 98 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 1 | 99 |
| 2 | 1 | 99 |
| 3 | 1 | 99 |
| 4 | 1 | 99 |
| 5 | 1 | 99 |
| 6 | 1 | 99 |
| 7 | 1 | 99 |
| 8 | 1 | 99 |
| 9 | 1 | 99 |
| 10 | 1 | 99 |
| 11 | 1 | 99 |
| 12 | 1 | 99 |
| 13 | 1 | 99 |
| 14 | 1 | 99 |
| 15 | 1 | 99 |
| 16 | 1 | 99 |
| 17 | 1 | 99 |
| 18 | 1 | 99 |
| 19 | 1 | 99 |
| 20 | 1 | 99 |
| 21 | 1 | 99 |
| 22 | 1 | 99 |
| 23 | 1 | 99 |
| 24 | 1 | 99 |
| 25 | 1 | 99 |
| 26 | 1 | 99 |
| 27 | 2 | 98 |
| 28 | 2 | 98 |
| 29 | 2 | 98 |
| 30 | 2 | 98 |
Chance of precipitation in September
Mulia gets around 502 mm of rain over 29.6 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 99% and peaks near 99% on the wettest days.
| 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 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 98 | 98 | 98 | 98 | 98 | 98 | 98 | 98 | 98 | 98 | 98 | 98 |
| Rain chance (%) | |
|---|---|
| 1 | 99 |
| 2 | 99 |
| 3 | 99 |
| 4 | 99 |
| 5 | 99 |
| 6 | 99 |
| 7 | 99 |
| 8 | 99 |
| 9 | 99 |
| 10 | 99 |
| 11 | 99 |
| 12 | 99 |
| 13 | 99 |
| 14 | 99 |
| 15 | 99 |
| 16 | 99 |
| 17 | 99 |
| 18 | 99 |
| 19 | 98 |
| 20 | 98 |
| 21 | 98 |
| 22 | 98 |
| 23 | 98 |
| 24 | 98 |
| 25 | 98 |
| 26 | 98 |
| 27 | 98 |
| 28 | 98 |
| 29 | 98 |
| 30 | 98 |
Humidity in September
Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the dry band about 95% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 97 | 97 | 97 | 96 | 96 | 96 | 96 | 95 | 95 | 95 | 95 | 94 | 94 | 94 | 94 | 93 | 93 | 93 | 93 | 93 | 94 | 94 | 94 | 94 | 94 | 94 | 94 | 94 | 94 | 94 |
| Comfortable (%) | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 97 | 3 |
| 2 | 97 | 3 |
| 3 | 97 | 3 |
| 4 | 96 | 4 |
| 5 | 96 | 4 |
| 6 | 96 | 4 |
| 7 | 96 | 4 |
| 8 | 95 | 5 |
| 9 | 95 | 5 |
| 10 | 95 | 5 |
| 11 | 95 | 5 |
| 12 | 94 | 6 |
| 13 | 94 | 6 |
| 14 | 94 | 6 |
| 15 | 94 | 6 |
| 16 | 93 | 7 |
| 17 | 93 | 7 |
| 18 | 93 | 7 |
| 19 | 93 | 7 |
| 20 | 93 | 7 |
| 21 | 94 | 6 |
| 22 | 94 | 6 |
| 23 | 94 | 6 |
| 24 | 94 | 6 |
| 25 | 94 | 6 |
| 26 | 94 | 6 |
| 27 | 94 | 6 |
| 28 | 94 | 6 |
| 29 | 94 | 6 |
| 30 | 94 | 6 |
Wind in September
Winds average 3 km/h in September.
Across September, daily wind ranges from about 3 km/h on the calmest days to 4 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) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 |
| 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 | 3 | calm |
| 2 | 3 | calm |
| 3 | 3 | calm |
| 4 | 3 | calm |
| 5 | 3 | calm |
| 6 | 3 | calm |
| 7 | 3 | calm |
| 8 | 3 | calm |
| 9 | 3 | calm |
| 10 | 3 | calm |
| 11 | 3 | calm |
| 12 | 3 | calm |
| 13 | 3 | calm |
| 14 | 3 | calm |
| 15 | 3 | calm |
| 16 | 3 | calm |
| 17 | 3 | calm |
| 18 | 3 | calm |
| 19 | 3 | calm |
| 20 | 3 | calm |
| 21 | 3 | calm |
| 22 | 3 | calm |
| 23 | 3 | calm |
| 24 | 3 | calm |
| 25 | 3 | calm |
| 26 | 3 | calm |
| 27 | 3 | calm |
| 28 | 3 | calm |
| 29 | 4 | calm |
| 30 | 4 | calm |
Sunrise & sunset in September
Daylight runs from about 11 h 54 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 6 minutes over September. Sunrise moves from 5:50 AM to 5:37 AM, and sunset from 5:46 PM to 5:38 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) | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunrise (AM) | 5:50 | 5:49 | 5:49 | 5:49 | 5:48 | 5:48 | 5:47 | 5:47 | 5:46 | 5:46 | 5:45 | 5:45 | 5:44 | 5:44 | 5:43 | 5:43 | 5:43 | 5:42 | 5:42 | 5:41 | 5:41 | 5:40 | 5:40 | 5:39 | 5:39 | 5:38 | 5:38 | 5:37 | 5:37 | 5:37 |
| Sunset (PM) | 5:46 | 5:45 | 5:45 | 5:45 | 5:45 | 5:44 | 5:44 | 5:44 | 5:44 | 5:43 | 5:43 | 5:43 | 5:43 | 5:42 | 5:42 | 5:42 | 5:42 | 5:41 | 5:41 | 5:41 | 5:40 | 5:40 | 5:40 | 5:40 | 5:39 | 5:39 | 5:39 | 5:39 | 5:38 | 5:38 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.9 | 5:50 | 5:46 |
| 2 | 11.9 | 5:49 | 5:45 |
| 3 | 11.9 | 5:49 | 5:45 |
| 4 | 11.9 | 5:49 | 5:45 |
| 5 | 11.9 | 5:48 | 5:45 |
| 6 | 11.9 | 5:48 | 5:44 |
| 7 | 11.9 | 5:47 | 5:44 |
| 8 | 12.0 | 5:47 | 5:44 |
| 9 | 12.0 | 5:46 | 5:44 |
| 10 | 12.0 | 5:46 | 5:43 |
| 11 | 12.0 | 5:45 | 5:43 |
| 12 | 12.0 | 5:45 | 5:43 |
| 13 | 12.0 | 5:44 | 5:43 |
| 14 | 12.0 | 5:44 | 5:42 |
| 15 | 12.0 | 5:43 | 5:42 |
| 16 | 12.0 | 5:43 | 5:42 |
| 17 | 12.0 | 5:43 | 5:42 |
| 18 | 12.0 | 5:42 | 5:41 |
| 19 | 12.0 | 5:42 | 5:41 |
| 20 | 12.0 | 5:41 | 5:41 |
| 21 | 12.0 | 5:41 | 5:40 |
| 22 | 12.0 | 5:40 | 5:40 |
| 23 | 12.0 | 5:40 | 5:40 |
| 24 | 12.0 | 5:39 | 5:40 |
| 25 | 12.0 | 5:39 | 5:39 |
| 26 | 12.0 | 5:38 | 5:39 |
| 27 | 12.0 | 5:38 | 5:39 |
| 28 | 12.0 | 5:37 | 5:39 |
| 29 | 12.0 | 5:37 | 5:38 |
| 30 | 12.0 | 5:37 | 5:38 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.25 kWh/m².
For context, solar energy here swings from a low near 3.76 kWh/m² to a high of 4.48 kWh/m² in October across the year — September's 4.25 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) | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.1 | Bright |
| 2 | 4.1 | Bright |
| 3 | 4.1 | Bright |
| 4 | 4.1 | Bright |
| 5 | 4.1 | Bright |
| 6 | 4.1 | Bright |
| 7 | 4.2 | Bright |
| 8 | 4.2 | Bright |
| 9 | 4.2 | Bright |
| 10 | 4.2 | Bright |
| 11 | 4.2 | Bright |
| 12 | 4.2 | Bright |
| 13 | 4.2 | Bright |
| 14 | 4.3 | Bright |
| 15 | 4.3 | Bright |
| 16 | 4.3 | Bright |
| 17 | 4.3 | Bright |
| 18 | 4.3 | Bright |
| 19 | 4.3 | Bright |
| 20 | 4.3 | Bright |
| 21 | 4.3 | Bright |
| 22 | 4.3 | Bright |
| 23 | 4.4 | Bright |
| 24 | 4.4 | Bright |
| 25 | 4.4 | Bright |
| 26 | 4.4 | Bright |
| 27 | 4.4 | Bright |
| 28 | 4.4 | Bright |
| 29 | 4.4 | Bright |
| 30 | 4.4 | Bright |
Is September a good time to visit Mulia?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a weaker month for outdoor sightseeing in Mulia.
What to pack for Mulia in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Mulia sees daytime highs around 18°C and nights near 10°C. Pack rain gear. About 30 days see rain.
UV index in Mulia in September
Clear-sky midday UV in September peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Mulia peaks around March 10 at about 18 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 12 (extreme).
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) | 17 | 18 | 18 | 17 | 14 | 12 | 13 | 14 | 15 | 15 | 15 | 15 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 17 | Extreme |
| Feb | 18 | Extreme |
| Mar | 18 | Extreme |
| Apr | 17 | Extreme |
| May | 14 | Extreme |
| Jun | 12 | Extreme |
| Jul | 13 | Extreme |
| Aug | 14 | Extreme |
| Sep | 15 | Extreme |
| Oct | 15 | Extreme |
| Nov | 15 | Extreme |
| Dec | 15 | Extreme |
Where is Mulia?
Mulia sits at 3.7°S, 138.0°E, 2,106 m above sea level, in Indonesia. The nearest listed city is Tiom, 57 km away.
Topography around Mulia
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mulia.
Within 3 km, the terrain around Mulia has very significant variations in elevation — a maximum elevation change of 1,305 m around an average of 2,245 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,889 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,282 m.
The land around Mulia is covered by trees (80%) within 3 km, trees (95%) within 16 km, and trees (96%) within 80 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
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 Mulia (-3.7147°, 137.9853°, elevation 2,106 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).