Narita climate
Narita (Japan) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 16 °C60 °F, and about 1,543 mm61 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Narita climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 847 | 337 | 642 | 702.7 | 1 |
| Feb | 949 | 337 | 643 | 622.4 | 1 |
| Mar | 1355 | 642 | 948 | 1064.2 | 0 |
| Apr | 1762 | 1050 | 1356 | 1224.8 | 0 |
| May | 2169 | 1558 | 1864 | 1365.4 | 0 |
| Jun | 2474 | 1865 | 2170 | 1626.4 | 0 |
| Jul | 2781 | 2272 | 2476 | 1536.0 | 0 |
| Aug | 2983 | 2474 | 2679 | 1385.4 | 0 |
| Sep | 2678 | 2170 | 2374 | 1957.7 | 0 |
| Oct | 2170 | 1661 | 1965 | 2258.9 | 0 |
| Nov | 1661 | 1151 | 1456 | 1014.0 | 0 |
| Dec | 1152 | 542 | 847 | 722.8 | 0 |
| Year | 2983 | 337 | 1660 | 1,54361 | 2 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 73% | 66% | 2.5 | 9:59 |
| Feb | 74% | 72% | 3.0 | 10:50 |
| Mar | 74% | 71% | 3.8 | 11:52 |
| Apr | 76% | 70% | 4.6 | 13:03 |
| May | 79% | 72% | 5.0 | 14:02 |
| Jun | 84% | 81% | 4.6 | 14:34 |
| Jul | 85% | 75% | 4.9 | 14:21 |
| Aug | 83% | 61% | 5.2 | 13:30 |
| Sep | 82% | 71% | 3.9 | 12:21 |
| Oct | 80% | 73% | 2.9 | 11:12 |
| Nov | 77% | 71% | 2.4 | 10:13 |
| Dec | 75% | 66% | 2.2 | 9:45 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Narita is like
The warmest month is August, with an average high of 29 °C83 °F and a low of 24 °C74 °F. The coldest is January, when highs average 8 °C47 °F and lows 3 °C37 °F. Seasons are strongly marked: the warmest month is on average 20.5 °C36.9 °F warmer than the coldest.
It is wet, with about 1,543 mm61 in of precipitation per year. The wettest three-month stretch is August–October, which brings 36% of the annual total. The wettest month is October (225 mm8.9 in), the driest is February (62 mm2.4 in).
Relative humidity ranges from 73% in January to 85% in July. The clearest skies (lowest average cloud amount, 61%) are typical of August. Average wind speed near the ground ranges from 12 km/h (7 mph) in August to 16 km/h (10 mph) in March. Daylight lasts from about 9.7 hours in December to 14.6 hours in June.
Best time to visit Narita
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May and June: average highs of 21 °C69 °F to 24 °C74 °F with 136 mm5.4 in to 162 mm6.4 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 8 °C47 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Narita
- Winter (December–February) — highs 847 to 11 °C52 °F, lows 337 to 5 °C42 °F, about 68 mm2.7 in of precipitation a month. Pack a warm coat, layers and closed shoes.
- Spring (March–May) — highs 1355 to 21 °C69 °F, lows 642 to 15 °C58 °F, about 122 mm4.8 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an umbrella or light rain jacket.
- Summer (June–August) — highs 2474 to 29 °C83 °F, lows 1865 to 24 °C74 °F, about 151 mm5.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Autumn (September–November) — highs 1661 to 26 °C78 °F, lows 1151 to 21 °C70 °F, about 174 mm6.8 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
How Narita compares
Compared with Chiba, about 27 km to the southwest, Narita has practically the same average temperature and receives 9% less precipitation (1,543 mm61 in vs 1,694 mm67 in). The difference is largest in July (1.3 °C2.3 °F cooler).
Of the 111 places in Japan covered by World Climates, Narita is the 49th warmest by annual mean temperature and the 73rd wettest by annual precipitation. See all of them on the Japan climate page.
Places in other countries with the most similar temperature and rainfall pattern: Jeju City (South Korea, Cfa), Gijang (South Korea, Cfa) and Virginia Beach (United States, Cfa).
Nearby places
- Chiba 27 km · 16 °C60 °F · 1,694 mm67 in
- Abiko 29 km · 15 °C59 °F · 1,519 mm60 in
- Tsukuba 38 km · 15 °C59 °F · 1,519 mm60 in
- Kawaguchi 55 km · 15 °C59 °F · 1,519 mm60 in
- Tokyo 57 km · 16 °C60 °F · 1,694 mm67 in
- Saitama 61 km · 15 °C59 °F · 1,449 mm57 in
- Mito 64 km · 15 °C58 °F · 1,479 mm58 in
- Koga 70 km · 15 °C59 °F · 1,519 mm60 in
Frequently asked questions
What is the warmest month in Narita?
August is the warmest month in Narita, with an average high of 29 °C (83 °F) and an average low of 24 °C (74 °F).
What is the coldest month in Narita?
January is the coldest month, with an average high of 8 °C (47 °F) and an average low of 3 °C (37 °F).
When does it rain the most in Narita?
October is the wettest month with about 225 mm (8.9 in) of precipitation; February is the driest with about 62 mm (2.4 in).
What is the best time to visit Narita?
Judging by long-term averages, the most comfortable months are May and June.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.