Monthly climate in Honjo, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Honjo features a humid subtropical climate (Cfa). Temperatures typically range between 4 °C (40 °F) and 27 °C (82 °F) through the year, but rarely can drop to -8 °C (18 °F) or can rise to as high as 38 °C (100 °F). The average annual precipitation amounts to about 1545 mm (60.8 inches) and receives 145 rainy days on the 1 mm (0.04 inches) threshold annually. Honjo enjoys an average of 2908 hours of sunshine throughout the year, and daylight varies from 9 hours 43 minutes to 14 hours 34 minutes per day.

Monthly average temperatures in Honjo, Japan

The warmest months in Honjo are July, August and September, with daily mean temperatures ranging from 23 to 27 °C (73 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 7 °C (40 - 44 °F) throughout the day. On average each year, Honjo experiences 97 days above 25 °C (77.0 °F) and 29 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Honjo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum17°C
(63°F)
21°C
(70°F)
24°C
(76°F)
29°C
(84°F)
33°C
(92°F)
33°C
(92°F)
38°C
(100°F)
37°C
(99°F)
35°C
(94°F)
32°C
(89°F)
24°C
(75°F)
19°C
(67°F)
Mean maximum15°C
(59°F)
18°C
(64°F)
22°C
(72°F)
26°C
(80°F)
31°C
(89°F)
30°C
(86°F)
34°C
(94°F)
36°C
(96°F)
32°C
(91°F)
29°C
(84°F)
22°C
(72°F)
17°C
(63°F)
Average high9°C
(48°F)
10°C
(51°F)
14°C
(58°F)
18°C
(66°F)
24°C
(75°F)
26°C
(79°F)
29°C
(84°F)
31°C
(88°F)
26°C
(79°F)
21°C
(70°F)
17°C
(62°F)
11°C
(52°F)
Daily mean4°C
(40°F)
5°C
(42°F)
9°C
(49°F)
14°C
(57°F)
19°C
(66°F)
22°C
(72°F)
25°C
(78°F)
27°C
(82°F)
23°C
(73°F)
18°C
(64°F)
12°C
(54°F)
7°C
(44°F)
Average low0°C
(33°F)
1°C
(34°F)
4°C
(40°F)
9°C
(48°F)
14°C
(58°F)
18°C
(65°F)
23°C
(73°F)
24°C
(76°F)
20°C
(68°F)
14°C
(58°F)
8°C
(46°F)
3°C
(37°F)
Mean minimum-4°C
(25°F)
-3°C
(27°F)
-1°C
(30°F)
3°C
(37°F)
7°C
(45°F)
14°C
(58°F)
19°C
(66°F)
19°C
(67°F)
15°C
(59°F)
8°C
(47°F)
1°C
(34°F)
-1°C
(30°F)
Minimum-8°C
(18°F)
-5°C
(24°F)
-3°C
(27°F)
-0°C
(32°F)
5°C
(41°F)
12°C
(54°F)
17°C
(63°F)
16°C
(61°F)
13°C
(56°F)
5°C
(42°F)
-1°C
(31°F)
-2°C
(29°F)

Compare climate in Honjo with other places

Compare temperature, precipitation, sunshine, UV index in Honjo, Japan with other places around the world.

Monthly average precipitation in Honjo, Japan

Honjo usually has the most precipitation in July, September and October, with an average of 19 rainy days and 237 mm (9.3 inches) of precipitation per month. The driest months in Honjo are February, November and December. On average, 42 mm (1.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Honjo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)44 (1.7)42 (1.7)115 (4.5)117 (4.6)124 (4.9)160 (6.3)258 (10.2)148 (5.8)194 (7.6)260 (10.2)43 (1.7)41 (1.6)
Average precipitation days (≥ 1 mm)6691113162217191655

Monthly sunshine hours in Honjo, Japan

The sunniest months in Honjo are April, May and August, when the sun shines an average of 9 hours 1 minutes a day. Least sunny months in Honjo: January, September and October receive an average of 6 hours 46 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Honjo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours190236262277280263231271225207230229
Mean daily daylight hours9h 58m10h 50m11h 57m13h 6m14h 5m14h 34m14h 19m13h 28m12h 22m11h 14m10h 14m9h 43m

Solar UV radiation in Honjo, Japan

Honjo experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 11 - 11, which corresponds to the Extreme category of sun exposure. January, February and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Honjo UV Index data.

Average daily maximum UV levels by month for Honjo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)3589101111119753