The best times to visit Sasebo for ideal weather are

April 9th to June 24th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Sasebo Travel Info

Weather in Sasebo


Average temperatures in Sasebo vary drastically. Considering humidity, temperatures feel nice some of the year, but often too hot in the summer and cold in the winter with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 26th 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 Sasebo, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally early to mid August where highs are regularly around 91°F (32.8°C) with temperatures rarely dropping below 78.1°F (25.6°C) at night.

Sasebo Temperatures (Fahrenheit)


Sasebo Temperatures (Celsius)


“Feels-Like” Temperatures

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.

Sasebo Perceived Temperature (F)


Sasebo Perceived Temperature (C)



Average Sasebo 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.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 50.1 44.1 37.1
Feb 53.4 46.8 39.3
Mar 58.8 51.8 43.5
Apr 66.7 59.1 50.6
May 75.1 67.3 59.2
Jun 79.3 73.3 68
Jul 86 80.4 75.5
Aug 89.3 82.6 77.2
Sep 84.2 77 70.7
Oct 75.7 68.2 60.7
Nov 64.5 57.6 50.3
Dec 53.9 47.7 41

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 10.1 6.7 2.8
Feb 11.9 8.2 4.1
Mar 14.9 11 6.4
Apr 19.3 15.1 10.3
May 23.9 19.6 15.1
Jun 26.3 22.9 20
Jul 30 26.9 24.2
Aug 31.8 28.1 25.1
Sep 29 25 21.5
Oct 24.3 20.1 15.9
Nov 18.1 14.2 10.2
Dec 12.2 8.7 5



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Sasebo are October, January, and then May. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid October. For example, on the week of October 15th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late June with an average of 4 days of significant precipitation the week of June 25th.

When can you find snow in Sasebo? 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 Sasebo.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Sasebo (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 15% 0 2.2
Feb 26% 0 3.7
Mar 23% 0 5.3
Apr 24% 0 5.4
May 20% 0 6
Jun 39% 0 12.2
Jul 31% 0 13.6
Aug 30% 0 11.7
Sep 26% 0 5.7
Oct 13% 0 4.6
Nov 22% 0 4.7
Dec 21% 0 4.2

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 15 0 5.6
Feb 26 0 9.4
Mar 23 0 13.5
Apr 24 0 13.7
May 20 0 15.2
Jun 39 0 31
Jul 31 0 34.5
Aug 30 0 29.7
Sep 26 0 14.5
Oct 13 0 11.7
Nov 22 0 11.9
Dec 21 0 10.7


Humidity and Wind

Sasebo has some very humid months, with other comfortably humid months. The least humid month is January (50.2% relative humidity), and the most humid month is July (73.6%).

Wind in Sasebo is usually calm. The windiest month is March, followed by December and April. March’s average wind speed of around 6.7 knots (7.7 MPH or 12.5 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 mid March where average top sustained speeds reach 14.5 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Sasebo.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

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 6.1 Light breeze 12.4 Significant breeze
Feb 6.1 Light breeze 12.7 Significant breeze
Mar 6.7 Light breeze 13.7 Significant breeze
Apr 6.5 Light breeze 13.6 Significant breeze
May 5.8 Light breeze 12.2 Significant breeze
Jun 5.4 Light breeze 11.5 Significant breeze
Jul 6.3 Light breeze 12.1 Significant breeze
Aug 6 Light breeze 11.9 Significant breeze
Sep 5.6 Light breeze 11.8 Significant breeze
Oct 5.7 Light breeze 11.6 Significant breeze
Nov 5.7 Light breeze 11.8 Significant breeze
Dec 6.6 Light breeze 13 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 50.2%
Feb 52.1%
Mar 51%
Apr 52.9%
May 58.1%
Jun 72.3%
Jul 73.6%
Aug 68.7%
Sep 62.9%
Oct 54%
Nov 54.9%
Dec 53%


Is it Safe to Travel to Sasebo?

Our best data indicates this area is generally safe, except in a few regions. As of Oct 07, 2019 there are regional travel advisories for Japan; exercise normal security precautions 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 Oct 01, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Sasebo, Japan is February, followed by March and July. 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 Sasebo in October. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 48 in October means 48% of the tourists vs. February.



Overall Sasebo Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 77.5°F (25.3°C) and 54.6°F (12.6°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 7 days of significant precipitation per month. Spring is fairly slow for tourism, which makes it a good time for those looking for deals.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the most precipitation with 9 to 12 days of precipitation per month. June – August is the busiest season for tourism in Sasebo, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 85.6°F (29.8°C) and 60°F (15.6°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 4 to 8 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in Sasebo to be enjoyable for warm weather travelers. The average high during this season is between 56.7°F (13.7°C) and 49.2°F (9.6°C). On average, it rains or snows a fair amount: 5 to 7 times per month. These times of year are the second busiest with tourists.


Best Times to TravelJapan › Sasebo, Japan