Mentiri weather in September
In September, Mentiri sees average daytime highs of 31°C and overnight lows near 25°C, with 196 mm of rain across 23.2 wet days and about 12 hours of daylight. It is the 6th-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 3% of the time in September, and the air most often feels miserable.
Daylight stretches from about 12 h 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Mentiri's 8th-clearest and 5th-windiest month. For the whole year in context, see Mentiri's year-round climate.
- Daytime high
- 31°
- 6th warmest
- Overnight low
- 25°
- 7th coldest
- Rainfall
- 196 mm
- 23.2 wet days
- Daylight
- 12 hours
- 6:13 AM – 6:15 PM
- Cloud cover
- 82%
- 8th clearest
- Wind
- 8 km/h
- 5th windiest
- Solar energy
- 5.67 kWh/m²
- Travel score
- 2.9
- out of 10
Mentiri is mukim of Brunei-Muara District, Brunei.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Day-to-day highs hold fairly steady near 31°C through the month.
A typical September day in Mentiri reaches about 31°C in the afternoon and slips back to 25°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 32°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) | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 31 | 25 |
| 2 | 31 | 25 |
| 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 | 25 |
| 14 | 31 | 25 |
| 15 | 31 | 25 |
| 16 | 31 | 25 |
| 17 | 31 | 25 |
| 18 | 31 | 25 |
| 19 | 31 | 25 |
| 20 | 31 | 25 |
| 21 | 31 | 25 |
| 22 | 31 | 25 |
| 23 | 31 | 25 |
| 24 | 31 | 25 |
| 25 | 31 | 25 |
| 26 | 31 | 25 |
| 27 | 31 | 25 |
| 28 | 31 | 25 |
| 29 | 31 | 25 |
| 30 | 31 | 25 |
How September really feels in Mentiri
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.
The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Mentiri weather by month
How September compares with the rest of the year at a glance. September is the 6th-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 | 30° / 25° | 162 | 19.2 | 11.7 | 3.8 |
| Feb | 30° / 25° | 105 | 13.3 | 11.8 | 4.2 |
| Mar | 31° / 25° | 91 | 15.8 | 12 | 3.8 |
| Apr | 32° / 25° | 131 | 19.5 | 12.1 | 3.1 |
| May | 32° / 26° | 148 | 21.5 | 12.2 | 2.9 |
| Jun | 31° / 25° | 185 | 19.8 | 12.3 | 3.1 |
| Jul | 31° / 25° | 179 | 21.1 | 12.3 | 3.1 |
| Aug | 31° / 25° | 182 | 21.3 | 12.2 | 3.1 |
| Sep | 31° / 25° | 196 | 23.2 | 12 | 2.9 |
| Oct | 30° / 25° | 254 | 26.9 | 11.9 | 2.8 |
| Nov | 30° / 25° | 232 | 26 | 11.8 | 2.8 |
| Dec | 30° / 25° | 222 | 24.7 | 11.7 | 3.1 |
Cloud cover in September
The sky is clear or mostly clear about 3% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 11% of September, with mostly cloudy or overcast conditions the remaining 86%.
| 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 (%) | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 12 |
| Cloudier (%) | 83 | 83 | 84 | 85 | 85 | 85 | 85 | 85 | 86 | 86 | 86 | 87 | 87 | 87 | 87 | 87 | 87 | 87 | 86 | 86 | 86 | 86 | 86 | 86 | 86 | 86 | 86 | 87 | 87 | 88 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 17 | 83 |
| 2 | 17 | 83 |
| 3 | 16 | 84 |
| 4 | 15 | 85 |
| 5 | 15 | 85 |
| 6 | 15 | 85 |
| 7 | 15 | 85 |
| 8 | 15 | 85 |
| 9 | 14 | 86 |
| 10 | 14 | 86 |
| 11 | 14 | 86 |
| 12 | 13 | 87 |
| 13 | 13 | 87 |
| 14 | 13 | 87 |
| 15 | 13 | 87 |
| 16 | 13 | 87 |
| 17 | 13 | 87 |
| 18 | 13 | 87 |
| 19 | 14 | 86 |
| 20 | 14 | 86 |
| 21 | 14 | 86 |
| 22 | 14 | 86 |
| 23 | 14 | 86 |
| 24 | 14 | 86 |
| 25 | 14 | 86 |
| 26 | 14 | 86 |
| 27 | 14 | 86 |
| 28 | 13 | 87 |
| 29 | 13 | 87 |
| 30 | 12 | 88 |
Chance of precipitation in September
Mentiri gets around 196 mm of rain over 23.2 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 77% and peaks near 86% on the wettest days. The odds climb 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 (%) | 75 | 75 | 76 | 75 | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 75 | 75 | 76 | 77 | 78 | 79 | 80 | 82 | 83 | 84 | 84 | 85 | 86 | 86 |
| Rain chance (%) | |
|---|---|
| 1 | 75 |
| 2 | 75 |
| 3 | 76 |
| 4 | 75 |
| 5 | 75 |
| 6 | 75 |
| 7 | 75 |
| 8 | 75 |
| 9 | 75 |
| 10 | 74 |
| 11 | 74 |
| 12 | 74 |
| 13 | 74 |
| 14 | 74 |
| 15 | 74 |
| 16 | 74 |
| 17 | 75 |
| 18 | 75 |
| 19 | 76 |
| 20 | 77 |
| 21 | 78 |
| 22 | 79 |
| 23 | 80 |
| 24 | 82 |
| 25 | 83 |
| 26 | 84 |
| 27 | 84 |
| 28 | 85 |
| 29 | 86 |
| 30 | 86 |
Humidity in September
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 64% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oppressive (%) | 39 | 39 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 39 | 39 | 38 | 37 | 36 | 35 | 33 | 32 | 32 | 31 | 30 | 30 | 29 | 29 | 29 | 29 | 30 | 30 |
| Miserable (%) | 61 | 61 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 61 | 61 | 62 | 63 | 64 | 65 | 67 | 68 | 68 | 69 | 70 | 70 | 71 | 71 | 71 | 71 | 70 | 70 |
| Oppressive (%) | Miserable (%) | |
|---|---|---|
| 1 | 39 | 61 |
| 2 | 39 | 61 |
| 3 | 40 | 60 |
| 4 | 40 | 60 |
| 5 | 40 | 60 |
| 6 | 40 | 60 |
| 7 | 40 | 60 |
| 8 | 40 | 60 |
| 9 | 40 | 60 |
| 10 | 40 | 60 |
| 11 | 40 | 60 |
| 12 | 40 | 60 |
| 13 | 39 | 61 |
| 14 | 39 | 61 |
| 15 | 38 | 62 |
| 16 | 37 | 63 |
| 17 | 36 | 64 |
| 18 | 35 | 65 |
| 19 | 33 | 67 |
| 20 | 32 | 68 |
| 21 | 32 | 68 |
| 22 | 31 | 69 |
| 23 | 30 | 70 |
| 24 | 30 | 70 |
| 25 | 29 | 71 |
| 26 | 29 | 71 |
| 27 | 29 | 71 |
| 28 | 29 | 71 |
| 29 | 30 | 70 |
| 30 | 30 | 70 |
Wind in September
Winds average 8 km/h in September.
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.
| 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 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| 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 | 8 | calm |
| 10 | 8 | calm |
| 11 | 8 | calm |
| 12 | 8 | calm |
| 13 | 8 | calm |
| 14 | 8 | calm |
| 15 | 8 | calm |
| 16 | 8 | calm |
| 17 | 8 | calm |
| 18 | 8 | calm |
| 19 | 8 | calm |
| 20 | 8 | calm |
| 21 | 8 | calm |
| 22 | 8 | calm |
| 23 | 8 | calm |
| 24 | 8 | calm |
| 25 | 8 | calm |
| 26 | 8 | calm |
| 27 | 8 | calm |
| 28 | 8 | calm |
| 29 | 8 | calm |
| 30 | 8 | calm |
Sunrise & sunset in September
Daylight runs from about 12 h 06 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 6 minutes over September. Sunrise moves from 6:17 AM to 6:10 AM, and sunset from 6:22 PM to 6:08 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) | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 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) | 6:17 | 6:17 | 6:16 | 6:16 | 6:16 | 6:16 | 6:15 | 6:15 | 6:15 | 6:15 | 6:15 | 6:14 | 6:14 | 6:14 | 6:14 | 6:13 | 6:13 | 6:13 | 6:13 | 6:13 | 6:12 | 6:12 | 6:12 | 6:12 | 6:11 | 6:11 | 6:11 | 6:11 | 6:11 | 6:10 |
| Sunset (PM) | 6:22 | 6:22 | 6:22 | 6:21 | 6:21 | 6:20 | 6:20 | 6:19 | 6:19 | 6:18 | 6:18 | 6:17 | 6:17 | 6:16 | 6:16 | 6:15 | 6:15 | 6:14 | 6:14 | 6:13 | 6:12 | 6:12 | 6:11 | 6:11 | 6:10 | 6:10 | 6:10 | 6:09 | 6:09 | 6:08 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.1 | 6:17 | 6:22 |
| 2 | 12.1 | 6:17 | 6:22 |
| 3 | 12.1 | 6:16 | 6:22 |
| 4 | 12.1 | 6:16 | 6:21 |
| 5 | 12.1 | 6:16 | 6:21 |
| 6 | 12.1 | 6:16 | 6:20 |
| 7 | 12.1 | 6:15 | 6:20 |
| 8 | 12.1 | 6:15 | 6:19 |
| 9 | 12.1 | 6:15 | 6:19 |
| 10 | 12.1 | 6:15 | 6:18 |
| 11 | 12.1 | 6:15 | 6:18 |
| 12 | 12.0 | 6:14 | 6:17 |
| 13 | 12.0 | 6:14 | 6:17 |
| 14 | 12.0 | 6:14 | 6:16 |
| 15 | 12.0 | 6:14 | 6:16 |
| 16 | 12.0 | 6:13 | 6:15 |
| 17 | 12.0 | 6:13 | 6:15 |
| 18 | 12.0 | 6:13 | 6:14 |
| 19 | 12.0 | 6:13 | 6:14 |
| 20 | 12.0 | 6:13 | 6:13 |
| 21 | 12.0 | 6:12 | 6:12 |
| 22 | 12.0 | 6:12 | 6:12 |
| 23 | 12.0 | 6:12 | 6:11 |
| 24 | 12.0 | 6:12 | 6:11 |
| 25 | 12.0 | 6:11 | 6:10 |
| 26 | 12.0 | 6:11 | 6:10 |
| 27 | 12.0 | 6:11 | 6:10 |
| 28 | 12.0 | 6:11 | 6:09 |
| 29 | 12.0 | 6:11 | 6:09 |
| 30 | 12.0 | 6:10 | 6:08 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 5.67 kWh/m².
For context, solar energy here swings from a low near 4.77 kWh/m² to a high of 5.92 kWh/m² in April across the year — September's 5.67 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) | 5.7 | 5.7 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.6 | 5.6 | 5.6 | 5.6 | 5.5 | 5.5 |
| 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 | 5.7 | Bright |
| 2 | 5.7 | Bright |
| 3 | 5.6 | Bright |
| 4 | 5.6 | Bright |
| 5 | 5.6 | Bright |
| 6 | 5.6 | Bright |
| 7 | 5.6 | Bright |
| 8 | 5.6 | Bright |
| 9 | 5.6 | Bright |
| 10 | 5.6 | Bright |
| 11 | 5.6 | Bright |
| 12 | 5.6 | Bright |
| 13 | 5.7 | Bright |
| 14 | 5.7 | Bright |
| 15 | 5.7 | Bright |
| 16 | 5.7 | Bright |
| 17 | 5.7 | Bright |
| 18 | 5.7 | Bright |
| 19 | 5.7 | Bright |
| 20 | 5.7 | Bright |
| 21 | 5.7 | Bright |
| 22 | 5.7 | Bright |
| 23 | 5.7 | Bright |
| 24 | 5.7 | Bright |
| 25 | 5.6 | Bright |
| 26 | 5.6 | Bright |
| 27 | 5.6 | Bright |
| 28 | 5.6 | Bright |
| 29 | 5.5 | Bright |
| 30 | 5.5 | Bright |
Hazard calendar for Mentiri
In September, Mentiri sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Mentiri sits in the Pacific typhoon belt; the season peaks July–October.
Is September a good time to visit Mentiri?
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 Mentiri.
What to pack for Mentiri in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Mentiri sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.
Sea temperature near Mentiri in September
The nearest coast averages about 30°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 16 km away) is warmest in May at about 30°C and coldest in February near 28°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) | 28 | 28 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 |
| Comfort | Tropical | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Tropical |
| Feb | 28 | Warm |
| Mar | 29 | Tropical |
| Apr | 30 | Tropical |
| May | 30 | Tropical |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 30 | Tropical |
| Oct | 30 | Tropical |
| Nov | 30 | Tropical |
| Dec | 29 | Tropical |
UV index in Mentiri in September
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 Mentiri peaks around February 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 11 (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) | 13 | 15 | 14 | 15 | 14 | 12 | 11 | 13 | 13 | 13 | 11 | 11 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 15 | Extreme |
| Mar | 14 | Extreme |
| Apr | 15 | Extreme |
| May | 14 | Extreme |
| Jun | 12 | Extreme |
| Jul | 11 | Extreme |
| Aug | 13 | Extreme |
| Sep | 13 | Extreme |
| Oct | 13 | Extreme |
| Nov | 11 | Extreme |
| Dec | 11 | Extreme |
Air quality in Mentiri in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.
Air quality in Mentiri is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 9 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) | 10 | 11 | 15 | 16 | 16 | 14 | 14 | 14 | 17 | 12 | 9 | 9 |
| Level | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 11 | Good |
| Mar | 15 | Moderate |
| Apr | 16 | Moderate |
| May | 16 | Moderate |
| Jun | 14 | Moderate |
| Jul | 14 | Moderate |
| Aug | 14 | Moderate |
| Sep | 17 | Moderate |
| Oct | 12 | Good |
| Nov | 9 | Good |
| Dec | 9 | Good |
Where is Mentiri?
Mentiri sits at 5.0°N, 115.0°E, 8 m above sea level, in Brunei. The nearest listed city is Serasa, 7.0 km away.
Topography around Mentiri
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mentiri.
Within 3 km, the terrain around Mentiri has only modest variations in elevation — a maximum elevation change of 126 m around an average of 28 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 197 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,921 m.
The land around Mentiri is covered by trees (40%) and water (21%) within 3 km, water (61%) and trees (21%) within 16 km, and trees (53%) and water (42%) within 80 km.
Brunei travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type G
- 240 V · 50 Hz
- Prices
- ≈ 35% of US
- price level, 2025
- GDP per capita
- $32,235
- 2025
- Homicide rate
- 0.5
- per 100k, 2013
- Road deaths
- 7.5
- per 100k/yr, 2019
- Income group
- High
- World Bank
- 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 Mentiri (4.9706°, 115.0208°, elevation 8 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).