Climate averages 1991–2020
Niihama weather
in February.
A cool, moderately wet month: the 11th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
February is a cool month in Niihama: daytime highs average 10.1°C and nights cool to about 3.3°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 86 mm of rain on roughly 12 days, which makes February a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 57 min on an average February day.
The nearest other city in this atlas is Saijō (12 km away). In February its highs average 10.0°C, about as warm as Niihama, with 86 mm of rain.
Among the 303 cities listed in Japan, Niihama ranks joint 37th of 303 for the warmest February highs and joint 228th of 303 for the driest February (rainfall, lowest first). The mean February high of those 303 cities is 7.9°C; Niihama is 2.2°C warmer than that mean.
From February to March, average highs rise by 3.5°C to 13.6°C, and monthly rainfall rises from 86 mm to 122 mm.
The annual picture
February in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Niihama climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.0°C3.3°C | 3.3°C | 78 | 13.5 | 10.210 h |
| February, selected | 10.1°C3.3°C | 3.3°C | 86 | 12.3 | 10.911 h |
| March | 13.6°C5.8°C | 5.8°C | 122 | 13.4 | 12.012 h |
| April | 18.5°C10.4°C | 10.4°C | 134 | 11.6 | 13.013 h |
| May | 22.8°C15.1°C | 15.1°C | 158 | 11.2 | 13.914 h |
| June | 25.8°C19.5°C | 19.5°C | 249 | 15.1 | 14.414 h |
| July | 29.5°C23.9°C | 23.9°C | 228 | 15.6 | 14.214 h |
| August | 30.6°C24.8°C | 24.8°C | 151 | 13.8 | 13.413 h |
| September | 27.1°C21.4°C | 21.4°C | 216 | 14.1 | 12.412 h |
| October | 21.9°C15.7°C | 15.7°C | 166 | 11.0 | 11.411 h |
| November | 16.6°C10.2°C | 10.2°C | 90 | 9.9 | 10.410 h |
| December | 11.4°C5.5°C | 5.5°C | 90 | 12.8 | 9.910 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
February in nearby cities
- Saijō in FebruaryJapan · 12 kmHigh 10.0°C · Low 3.1°C · 86 mm rain
- Shikokuchūō in FebruaryJapan · 23 kmHigh 9.8°C · Low 2.9°C · 90 mm rain
- Imabari in FebruaryJapan · 31 kmHigh 9.5°C · Low 4.1°C · 80 mm rain
- Shinagawa in FebruaryJapan · 45 kmHigh 8.6°C · Low 0.9°C · 87 mm rain
- Kochi in FebruaryJapan · 50 kmHigh 10.7°C · Low 2.3°C · 100 mm rain
- Matsuyama in FebruaryJapan · 52 kmHigh 10.0°C · Low 3.2°C · 82 mm rain
- Onomichi in FebruaryJapan · 52 kmHigh 9.6°C · Low 1.6°C · 54 mm rain
- Mihara in FebruaryJapan · 53 kmHigh 9.8°C · Low 1.5°C · 55 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Niihama) is explained once on the Niihama year overview and on the Sources, method and limits page.
Saijō lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.