Rustaq in Summer
In summer (June, July and August), Rustaq sees average daytime highs around 40°C and overnight lows near 30°C, with 12 mm of rain over about 1 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs ease from about 40°C in early June to 38°C by late August. The sky is clear or mostly clear about 77% of the time across summer, and the air most often feels dry.
Summer is Rustaq's weakest season of the year to visit on our travel score. For the whole year in context, see Rustaq's year-round climate.
- Avg daytime high
- 40°C
- warmest season of the year
- Avg overnight low
- 30°C
- Rainfall
- 12 mm
- 1 wet days
- Avg wind
- 8 km/h
- Travel score
- 0.4
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Rustaq in Summer
Over the season highs ease from about 40°C in early June to 38°C by late August.
A typical summer day in Rustaq reaches about 40°C and drops to 30°C overnight. The warmest of the three months is June, the coolest August.
How summer really feels in Rustaq
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.
Rustaq 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 | 24° / 15° | 14 | 2.5 | 10.7 | 8.9 |
| Feb | 26° / 16° | 13 | 2.2 | 11.2 | 8.7 |
| Mar | 29° / 20° | 20 | 2.7 | 11.8 | 6.8 |
| Apr | 34° / 24° | 13 | 1.8 | 12.5 | 3.6 |
| May | 39° / 28° | 2 | 0.7 | 13.1 | 0.6 |
| Jun | 41° / 31° | 5 | 0.2 | 13.4 | 0.0 |
| Jul | 40° / 31° | 6 | 0.4 | 13.3 | 0.2 |
| Aug | 39° / 30° | 1 | 0.3 | 12.8 | 0.9 |
| Sep | 37° / 28° | 2 | 0.3 | 12.1 | 2.0 |
| Oct | 34° / 24° | 3 | 0.7 | 11.5 | 4.0 |
| Nov | 29° / 20° | 11 | 1.3 | 10.9 | 7.4 |
| Dec | 25° / 16° | 14 | 2.2 | 10.6 | 8.8 |
Cloud cover in Summer
The sky is clear or mostly clear about 77% of the time across summer.
Chance of precipitation in Summer
Rustaq gets around 12 mm of rain over 1 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — 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 13 h 18 min in early June to 12 h 30 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 6.9 kWh/m².
Hazard calendar for Rustaq
In summer, Rustaq overlaps its cyclone and dust season. The full year is below, with each hazard's peak months called out.
Rustaq sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.
Rustaq sees seasonal dust haze (April–September), heaviest in July.
Is summer a good time to visit Rustaq?
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 Rustaq.
What to pack for Rustaq in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Rustaq sees daytime highs around 40°C and nights near 30°C. Pack light clothes and sun protection.
Sea temperature near Rustaq in Summer
The nearest coast averages about 32°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 54 km away) is warmest in June at about 32°C and coldest in February near 23°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) | 24 | 23 | 25 | 27 | 30 | 32 | 32 | 31 | 31 | 30 | 28 | 25 |
| Comfort | Refreshing | Refreshing | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 24 | Refreshing |
| Feb | 23 | Refreshing |
| Mar | 25 | Warm |
| Apr | 27 | Warm |
| May | 30 | Tropical |
| Jun | 32 | Tropical |
| Jul | 32 | Tropical |
| Aug | 31 | Tropical |
| Sep | 31 | Tropical |
| Oct | 30 | Tropical |
| Nov | 28 | Tropical |
| Dec | 25 | Warm |
UV index in Rustaq in Summer
Clear-sky midday UV across summer averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Rustaq peaks around May 15 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 6 (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) | 7 | 9 | 10 | 11 | 11 | 10 | 10 | 11 | 10 | 9 | 7 | 6 |
| Level | High | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 7 | High |
| Feb | 9 | Very high |
| Mar | 10 | Extreme |
| Apr | 11 | Extreme |
| May | 11 | Extreme |
| Jun | 10 | Extreme |
| Jul | 10 | Extreme |
| Aug | 11 | Extreme |
| Sep | 10 | Extreme |
| Oct | 9 | Very high |
| Nov | 7 | High |
| Dec | 6 | High |
Air quality in Rustaq 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 Rustaq is worst in July — around 84 µg/m³ PM2.5 (unhealthy), about 3.3× the cleanest month (December, 25 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) | 28 | 33 | 37 | 43 | 48 | 57 | 84 | 67 | 44 | 31 | 27 | 25 |
| Level | Moderate | Moderate | Poor | Poor | Poor | Unhealthy | Unhealthy | Unhealthy | Poor | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 28 | Moderate |
| Feb | 33 | Moderate |
| Mar | 37 | Poor |
| Apr | 43 | Poor |
| May | 48 | Poor |
| Jun | 57 | Unhealthy |
| Jul | 84 | Unhealthy |
| Aug | 67 | Unhealthy |
| Sep | 44 | Poor |
| Oct | 31 | Moderate |
| Nov | 27 | Moderate |
| Dec | 25 | Moderate |
Where is Rustaq?
Rustaq sits at 23.4°N, 57.4°E, 341 m above sea level, in Oman. The nearest listed city is Bahla, 47 km away.
Topography around Rustaq
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rustaq.
Within 3 km, the terrain around Rustaq has large variations in elevation — a maximum elevation change of 1,070 m around an average of 474 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,776 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,973 m.
The land around Rustaq is covered by bare terrain (74%) within 3 km, bare terrain (93%) within 16 km, and bare terrain (79%) within 80 km.
Oman travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type G
- 240 V · 50 Hz
- Prices
- ≈ 47% of US
- price level, 2025
- GDP per capita
- $19,947
- 2025
- Happiness
- 6.2 / 10
- World Happiness, 2025
- Safe drinking water
- 91%
- of population, 2024
- Homicide rate
- 0.1
- per 100k, 2023
- Road deaths
- 10.6
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very low
- EF EPI 407
- 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 Rustaq (23.3908°, 57.4244°, elevation 341 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.