Mersing Temperature by Month
Mersing in Johor, Malaysia enjoys a stable climate, with daytime temperatures staying close to 30°C (86°F) throughout the year. Explore the full monthly breakdown below.
Mersing Monthly Temperatures
With minimal seasonal shifts, Mersing experiences a constant climate year-round. Maximum daytime temperatures range from a very warm 32°C (90°F) in May to a comfortable 29°C (84°F) in January. At night, temperatures range from 26°C (79°F) in May to 25°C (77°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Mersing by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating.
The chart below shows the average temperature throughout the year:
Temperature: Mersing vs Malaysia
The map below shows the annual temperature across Malaysia. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Mersing vs World: Temperature Compared
Mersing's average annual maximum temperature is 30°C (86°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
What Does the Temperature Feel Like in Mersing?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Mersing, January is the coolest month, with average highs of 29°C (84°F) and humidity around 83% — considered very high. In May, the warmest month, temperatures average 32°C (90°F) with 87% humidity — conditions that feel very high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Mersing this rarely lasts long on the ground.
For more on Mersing's weather — including monthly rainfall, sunshine hours, and humidity — visit our Mersing climate page.
