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Climate in Flores (Indonesia)


Average weather, temperature, rainfall, sunshine hours

Flag - Indonesia

Flores where it's located


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In Flores, an Indonesian island belonging to the eastern portion of the Lesser Sunda Islands (Nusa Tenggara), at 8 degrees south latitude, and in the nearby Alor Archipelago, the climate is tropical, hot all year round, with a muggy rainy season from December to March and a dry season from June to September. In the rainy season, the sun shines for a few hours a day, in fact, it usually rains a couple of hours in the morning and a couple of hours in the afternoon.
Temperatures are high and quite uniform throughout the year. The least hot period is from June to August, when the south-east monsoon blows, and the minimum temperature can drop down to 19/20 °C (66/68 °F). From September to November, and sometimes from mid-August, the hottest period of the year occurs, when the temperature can reach 35/37 °C (95/99 °F), especially on the north side. In the rainy season, on the other hand, high humidity makes the heat muggy.
Here are the average temperatures of the largest city, Maumere, located on the northern coast.
Maumere - Average temperatures (1991-2020)
Temperatures (°C)
MonthMinMaxMean
January24.63127.8
February24.230.727.4
March24.231.327.7
April24.332.128.2
May24.232.128.2
June23.431.527.5
July22.831.227
August22.331.727
September23.232.727.9
October24.433.528.9
November25.233.729.4
December24.932.128.5
Year243227.9

Throughout the year, 1,600 millimeters (62 inches) of rain fall, with a maximum from December to March and a minimum from June to September. Here is the average precipitation in Maumere.
Maumere - Average precipitation
MonthRain (mm)Days
January29020
February26017
March25015
April1159
May1056
June454
July252
August151
September301
October703
November1509
December24017
Year1590104

In Flores, there's plenty of sunshine in the dry season, while in the rainy season, the sun shines for a few hours a day, between one rain shower and another. In the interior of the island, a blanket of clouds often lies over the mountain peaks. Here are the average sunshine hours per day in Maumere.
Maumere - Sunshine hours
MonthAverageTotal
January6185
February6170
March7215
April9270
May9280
June9270
July9280
August9280
September10300
October10310
November8240
December7215
Year8.33015

As mentioned, in the interior, there are hills and mountains. The highest peak is Poco Mandasawu, 2,370 meters (9,350 feet) high, located in the western part of the island, while in the eastern part, we find Kelimutu volcano, 1,639 meters (5,377 ft) high, and characterized by the presence of three lakes that change color. If you are planning some hiking at high altitudes, keep in mind that above 1,000 meters (3,300 feet), it is cool in the evening and at night, especially in the dry season, while above 2,000 meters (6,500 feet), it can get quite cold.
Here are the average temperatures of Ruteng, located at 1,100 meters (3,600 feet) above sea level, on the northern slope of Poco Mandasawu.
Ruteng - Average temperatures (2005-2020)
Temperatures (°C)
MonthMinMaxMean
January17.324.420.8
February16.824.220.5
March16.524.620.6
April15.925.120.5
May15.325.120.2
June1424.819.4
July1324.418.7
August12.624.918.8
September13.72619.8
October15.226.420.8
November1626.121
December17.124.921
Year15.325.120.15

In mountainous areas, the rains are definitely more abundant: in Ruteng, they amount to 3.575 mm (140 in) per year. During the dry season, it does not rain much, but thunderstorms can sometimes occur, more often than on the coast.
Ruteng - Average precipitation
MonthRain (mm)Days
January57523
February51520
March50518
April29513
May2059
June957
July655
August754
September1357
October26011
November38516
December47021
Year3575155

In 2003, in the cave of Liang Bua, north of Ruteng, the fossil remains of hominids who lived until 50,000 years ago have been discovered.

Lakes of Kelimutu volcano

The sea in Flores is warm enough to swim in throughout the year: the water temperature ranges from 27/27.5 °C (80.5/81.5 °F) in July and August to 29/29.5 °C (84/85 °F) between November and May. Here are the average sea temperatures.
Flores - Sea temperature
MonthTemperatures (°C)
January29
February29
March29
April29
May29
June28
July27
August27
September28
October29
November30">
December29
Year28.6

From November to mid-May, but more often from January to mid-April, Flores can be affected by tropical cyclones, which are formed on the sea of Timor, and then move south-westard, between the Sunda Islands and Australia.
Generally this area is affected quite rarely, however, in April 2021 the island was hit by cyclone Seroja, which produced landslides and floods especially in the eastern part. In any case, the most intense cyclone to hit Flores remains the one at the end of April 1973.

Best Time


The best time to travel to Flores and enjoy its beaches is from June to August: the sun shines, the heat is not too intense, and in any case, it's tempered by the breeze; there are just some short downpours or thunderstorms every now and then. In September, the rains have not started yet, but it starts to get very hot at low altitude. In late September or in October, the rains often increase in inland and mountainous areas.

What to pack


All year round, bring light clothes of natural fibers, a sun hat, a scarf for the breeze, and a light sweatshirt for the evening. From December to March, you can add a light raincoat or umbrella.
When going to the reef, you can bring snorkeling equipment, including water shoes or rubber-soled shoes.
When going mountain climbing, bring hiking shoes, a sweatshirt or sweater, a jacket, and a raincoat.


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