Mentiri in Summer
In summer (June, July and August), Mentiri sees average daytime highs around 31°C and overnight lows near 25°C, with 546 mm of rain over about 62 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Across summer, daytime highs hold fairly steady around 31°C. The sky is clear or mostly clear about 6% of the time across summer, and the air most often feels miserable.
Summer is Mentiri's 3rd-best season to visit on our travel score. Mentiri has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Mentiri's year-round climate.
- Avg daytime high
- 31°C
- 2nd-warmest season
- Avg overnight low
- 25°C
- Rainfall
- 546 mm
- 62 wet days
- Avg wind
- 8 km/h
- Travel score
- 3.1
- 3rd-best season
- Months
- Jun · Jul · Aug
Temperature in Mentiri in Summer
Across summer, daytime highs hold fairly steady around 31°C.
A typical summer day in Mentiri reaches about 31°C and drops to 25°C overnight. The warmest of the three months is June, the coolest July.
How summer really feels in Mentiri
Once humidity and wind are folded in, summer brings about 92 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Mentiri weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| 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 Summer
The sky is clear or mostly clear about 6% of the time across summer.
Chance of precipitation in Summer
Mentiri gets around 546 mm of rain over 62 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 8 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 18 min in early June to 12 h 06 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.5 kWh/m².
Hazard calendar for Mentiri
In summer, Mentiri overlaps 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 summer a good time to visit Mentiri?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Mentiri.
What to pack for Mentiri in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Mentiri sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 62 days see rain.
Sea temperature near Mentiri in Summer
The nearest coast averages about 30°C across summer — 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 Summer
Clear-sky midday UV across summer averages around 12 (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 Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer 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.