Climate Insights for Saiki

Saiki Shi, Oita Prefecture, Japan

Hottest
August
30°C peak
Coldest
January
6°C low
Wettest
June
289mm rain
Best to Visit
November
Mild temps & low rain

Climate Overview

The climate in Saiki is warm and mild. The average annual temperature is 18°C and approximately 1835mm of precipitation falls per year. Saiki receives a notable amount of rainfall throughout the year, including during its driest month. Saiki is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to 6°C.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 11° Average: 9° Min: 6° Feb Max: 12° Average: 9° Min: 7° Mar Max: 15° Average: 12° Min: 10° Apr Max: 19° Average: 16° Min: 14° May Max: 22° Average: 20° Min: 18° Jun Max: 25° Average: 23° Min: 21° Jul Max: 28° Average: 27° Min: 25° Aug Max: 30° Average: 28° Min: 26° Sep Max: 27° Average: 25° Min: 24° Oct Max: 23° Average: 21° Min: 19° Nov Max: 18° Average: 16° Min: 14° Dec Max: 13° Average: 11° Min: 8°
Max
Average
Min

Temperatures in Saiki vary considerably across the year, with a 24°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 30°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 6°C and an average of 9°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between November and December, with a 5°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm 300mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 71mm Snow: 1mm Feb Precipitation: 85mm Snow: 0mm Mar Precipitation: 123mm Snow: 0mm Apr Precipitation: 131mm Snow: 0mm May Precipitation: 173mm Snow: 0mm Jun Precipitation: 289mm Snow: 0mm Jul Precipitation: 259mm Snow: 0mm Aug Precipitation: 178mm Snow: 0mm Sep Precipitation: 228mm Snow: 0mm Oct Precipitation: 152mm Snow: 0mm Nov Precipitation: 82mm Snow: 0mm Dec Precipitation: 64mm Snow: 0mm
Precipitation
Snow

Saiki is a fairly wet location, receiving approximately 1835mm of precipitation annually, which averages out to around 153mm per month. The wettest month is June, averaging 289mm of rainfall. July and September also tend to see above-average precipitation. The driest month is December, with just 64mm. That's 226mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.

Wind

0km/h 5km/h 10km/h 15km/h 20km/h 25km/h 30km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 26km/h Feb Wind Speed: 26km/h Mar Wind Speed: 25km/h Apr Wind Speed: 24km/h May Wind Speed: 21km/h Jun Wind Speed: 20km/h Jul Wind Speed: 19km/h Aug Wind Speed: 19km/h Sep Wind Speed: 21km/h Oct Wind Speed: 23km/h Nov Wind Speed: 23km/h Dec Wind Speed: 26km/h
Wind Speed

Saiki is moderately windy, with an average annual wind speed of 23km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 26km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 19km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 7km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 26km/h in winter, 23km/h in spring, 19km/h in summer, 22km/h in autumn.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

88 days until Summer

It is currently spring in Saiki, which began on March 20, 2026. Saiki is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 30°C, while the coldest stretch bottoms out in January near 6°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

Spring

Temperatures range from 10 to 22°C. Rainfall is heavy, totalling around 427mm across the season with a monthly average of 142mm. Winds are moderate at around 23km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 21 to 30°C. Rainfall is heavy, totalling around 726mm across the season with a monthly average of 242mm. Winds are moderate at around 19km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 14 to 27°C. Rainfall is heavy, totalling around 462mm across the season with a monthly average of 154mm. Winds are moderate at around 22km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 6 to 13°C. Precipitation is moderate at around 219mm for the season, averaging 73mm per month. Winds are strong, averaging 26km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Best Time to Visit

Jan
Feb
Mar 12°
Apr 16°
May 20°
Jun 23°
Jul 27°
Aug 28°
Sep 25°
Oct 21°
Nov 16°
Dec 11°

The best time to visit Saiki is during November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 82mm per month. By contrast, August can be uncomfortably hot with highs reaching 30°C, while January is the coldest period with lows dropping to 6°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

Monthly Climate Data

The table below shows monthly climate averages for Saiki based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
6 °C
11 °C
26 km/h
71 mm
1 cm
Feb
7 °C
12 °C
26 km/h
85 mm
0 cm
Mar Current
10 °C
15 °C
25 km/h
123 mm
0 cm
Apr
14 °C
19 °C
24 km/h
131 mm
0 cm
May
18 °C
22 °C
21 km/h
173 mm
0 cm
Jun
21 °C
25 °C
20 km/h
289 mm
0 cm
Jul
25 °C
28 °C
19 km/h
259 mm
0 cm
Aug
26 °C
30 °C
19 km/h
178 mm
0 cm
Sep
24 °C
27 °C
21 km/h
228 mm
0 cm
Oct
19 °C
23 °C
23 km/h
152 mm
0 cm
Nov
14 °C
18 °C
23 km/h
82 mm
0 cm
Dec
8 °C
13 °C
26 km/h
64 mm
0 cm
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Metric (°C, km/h)