The best times to visit Sleman for ideal weather are
July 2nd to October 7th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Sleman Travel Guide
Other Sleman Travel Info
Weather in Sleman
Average temperatures in Sleman vary barely at all. Considering humidity, temperatures feel hot all year with a fair chance of precipitation about half of the year. The area is less temperate than some — in the 11th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Sleman, the hottest months are October, September, and then May. See average monthly temperatures below. The warmest time of year is generally mid October where highs are regularly around 94.4°F (34.7°C) with temperatures rarely dropping below 76.3°F (24.6°C) at night.
Sleman Temperatures (Fahrenheit)
Sleman Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Sleman Perceived Temperature (F)
Sleman Perceived Temperature (C)
Average Sleman Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Sleman are August, July, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid August. For example, on the week of August 6th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid December with an average of 4 days of significant precipitation the week of December 17th.
When can you find snow in Sleman? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Sleman.
Snow on the Ground
The graph below shows the average snow on the ground in Sleman (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Sleman has some very humid months, with other comfortably humid months. The least humid month is September (58% relative humidity), and the most humid month is February (78.1%).
Wind in Sleman is usually calm. The windiest month is August, followed by January and July. August’s average wind speed of around 5.8 knots (6.7 MPH or 10.8 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late January where average top sustained speeds reach 13.7 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Sleman.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||5.6||Light breeze||12.7||Significant breeze|
|Feb||5.3||Light breeze||12.3||Significant breeze|
|Mar||4.8||Light breeze||11||Significant breeze|
|Apr||4.6||Light breeze||9.8||Gentle breeze|
|May||5.1||Light breeze||10.1||Significant breeze|
|Jun||5.2||Light breeze||10.3||Gentle breeze|
|Jul||5.5||Light breeze||10.7||Significant breeze|
|Aug||5.8||Light breeze||11.4||Significant breeze|
|Sep||5.5||Light breeze||11.9||Significant breeze|
|Oct||5.3||Light breeze||11.4||Significant breeze|
|Nov||4.4||Light breeze||10.1||Significant breeze|
|Dec||4.2||Light breeze||10||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Sleman?
Our best data indicates this area is somewhat safe, but with extra warnings in a few regions. As of Oct 07, 2019 there are travel warnings and regional advisories for Indonesia; exercise a high degree of caution and avoid some areas. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 20, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Sleman, Indonesia is November, followed by January and May. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Sleman in July. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Sleman Travel Experience by Season
Fall (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 91.2°F (32.9°C) and 87.4°F (30.8°C) with similar temperatures in the later months. Rain is somewhat common with 6 to 10 days of significant precipitation per month. Fall is fairly slow for tourism, which makes it a good time for those looking for deals.
Winter (June through August)
The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the least precipitation with 2 to 4 days of precipitation per month. June – August is the slowest season for tourism in Sleman, so lodging and other accommodations may cost less than usual.
Spring (September through November)
Spring daily highs range from 94.4°F (34.7°C) and 89.8°F (32.1°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 3 to 10 days per month. Tourism is the busiest during these months due to the weather, so hotels may be higher priced.
Summer (December through February)
Weather is perfect this time of year in Sleman to be enjoyable for warm weather travelers. The average high during this season is between 88.9°F (31.6°C) and 86.3°F (30.2°C). On average, it rains or snows a great amount: 11 to 14 times per month. These times of year are the second busiest with tourists.