Mertoyudan in Winter
In winter (June, July and August), Mertoyudan sees average daytime highs around 27°C and overnight lows near 19°C, with 269 mm of rain over about 42 wet days across the season. It is the coldest season of the year and the driest season of the year.
Across winter, daytime highs hold fairly steady around 27°C. The sky is clear or mostly clear about 11% of the time across winter, and the air most often feels muggy.
Winter is Mertoyudan's best season of the year to visit on our travel score. Mertoyudan 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 Mertoyudan's year-round climate.
- Avg daytime high
- 27°C
- coldest season of the year
- Avg overnight low
- 19°C
- Rainfall
- 269 mm
- 42 wet days
- Avg wind
- 4 km/h
- Travel score
- 5.8
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Mertoyudan in Winter
Across winter, daytime highs hold fairly steady around 27°C.
A typical winter day in Mertoyudan reaches about 27°C and drops to 19°C overnight. The warmest of the three months is June, the coolest August.
Mertoyudan weather by month
How the three winter 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 | 28° / 20° | 421 | 28.7 | 12.4 | 3.4 |
| Feb | 28° / 20° | 412 | 27.1 | 12.2 | 3.3 |
| Mar | 28° / 20° | 390 | 28.8 | 12.1 | 3.3 |
| Apr | 28° / 21° | 312 | 26.3 | 11.8 | 3.4 |
| May | 28° / 20° | 165 | 20.8 | 11.7 | 4.4 |
| Jun | 27° / 20° | 118 | 16.2 | 11.6 | 5.3 |
| Jul | 27° / 19° | 85 | 13.6 | 11.6 | 5.9 |
| Aug | 27° / 18° | 66 | 12 | 11.8 | 6.1 |
| Sep | 27° / 19° | 102 | 16 | 12 | 5.4 |
| Oct | 28° / 20° | 221 | 22.9 | 12.2 | 4.4 |
| Nov | 28° / 20° | 377 | 27.8 | 12.3 | 3.5 |
| Dec | 28° / 20° | 394 | 28.1 | 12.4 | 3.5 |
Cloud cover in Winter
The sky is clear or mostly clear about 11% of the time across winter.
Chance of precipitation in Winter
Mertoyudan gets around 269 mm of rain over 42 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 4 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 36 min in early June to 11 h 48 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 4.9 kWh/m².
Hazard calendar for Mertoyudan
None of Mertoyudan's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Mertoyudan sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Mertoyudan's rainy season runs October–April, when most of the year's rain falls.
Is winter a good time to visit Mertoyudan?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Mertoyudan for sightseeing.
What to pack for Mertoyudan in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Mertoyudan sees daytime highs around 27°C and nights near 19°C. Pack light clothes and rain gear. Worth having: sun protection. About 42 days see rain.
Sea temperature near Mertoyudan in Winter
The nearest coast averages about 26°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 41 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 29 | 29 | 29 | 29 | 29 | 28 | 26 | 25 | 25 | 26 | 28 | 29 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Warm | Warm | Warm | Warm | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 29 | Tropical |
| Feb | 29 | Tropical |
| Mar | 29 | Tropical |
| Apr | 29 | Tropical |
| May | 29 | Tropical |
| Jun | 28 | Warm |
| Jul | 26 | Warm |
| Aug | 25 | Warm |
| Sep | 25 | Warm |
| Oct | 26 | Warm |
| Nov | 28 | Warm |
| Dec | 29 | Tropical |
UV index in Mertoyudan in Winter
Clear-sky midday UV across winter averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Mertoyudan peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 14 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) | 14 | 14 | 15 | 12 | 8 | 6 | 10 | 11 | 13 | 13 | 9 | 11 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | High | Very high | Extreme | Extreme | Extreme | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 14 | Extreme |
| Mar | 15 | Extreme |
| Apr | 12 | Extreme |
| May | 8 | Very high |
| Jun | 6 | High |
| Jul | 10 | Very high |
| Aug | 11 | Extreme |
| Sep | 13 | Extreme |
| Oct | 13 | Extreme |
| Nov | 9 | Very high |
| Dec | 11 | Extreme |
Air quality in Mertoyudan in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Mertoyudan is worst in April — around 58 µg/m³ PM2.5 (unhealthy), about 1.7× the cleanest month (September, 34 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) | 48 | 46 | 54 | 58 | 57 | 51 | 42 | 35 | 34 | 37 | 42 | 42 |
| Level | Poor | Poor | Poor | Unhealthy | Unhealthy | Poor | Poor | Moderate | Moderate | Poor | Poor | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 48 | Poor |
| Feb | 46 | Poor |
| Mar | 54 | Poor |
| Apr | 58 | Unhealthy |
| May | 57 | Unhealthy |
| Jun | 51 | Poor |
| Jul | 42 | Poor |
| Aug | 35 | Moderate |
| Sep | 34 | Moderate |
| Oct | 37 | Poor |
| Nov | 42 | Poor |
| Dec | 42 | Poor |
Where is Mertoyudan?
Mertoyudan sits at 7.5°S, 110.2°E, 351 m above sea level, in Indonesia. The nearest listed city is Magelang, 6.0 km away.
Topography around Mertoyudan
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mertoyudan.
Within 3 km, the terrain around Mertoyudan has only modest variations in elevation — a maximum elevation change of 229 m around an average of 331 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,078 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,291 m.
The land around Mertoyudan is covered by trees (51%) and artificial surfaces (27%) within 3 km, trees (73%) within 16 km, and trees (58%) 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 Mertoyudan (-7.52°, 110.2264°, elevation 351 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.