SeasonMapKaruizawa weather in March
Japan
March in Karuizawa: cold, rainy, with reliable snow — a good time to visit.
#9 of 12 months in Karuizawa · #1144 of 1383 destinations to visit in March · comfort 63/100 (tier C)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Karuizawa in March
Other months in Karuizawa
Karuizawa's forum calls May one of the most pleasant months — its elevation keeps it noticeably cooler than Tokyo, with a day-to-night temperature swing of around 10°C that catches some visitors out. Regulars recommend layers for exactly that reason, plus a rain jacket just in case, and flag the first week of May (Golden Week) as considerably busier than the rest of the month.
Add your own note from Karuizawa's card on the map.
Karuizawa climate normals — March
| Daytime high | 9°C / 48°F | 🧥 cold |
|---|---|---|
| Nighttime low | -5°C / 24°F | |
| Feels like (high) | 6°C / 43°F | |
| Rainfall | 106 mm / 4.2 in | 🌧 rainy |
| Rainy days | 12 days | |
| Humidity | 71% | 💧 humid |
| Dew point | -2°C / 28°F | |
| Sunshine | 8.8 h/day | |
| Daylight | 12 h | |
| Wind | 13 km/h / 8 mph | |
| Snowfall | 35 cm / 13.8 in | |
| Air quality (US AQI) | 51 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Karuizawa in March
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusySpring break (haruyasumi) in Japan(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Karuizawa's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherKaruizawa's best weather comes in May, June and September — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
What's on in Karuizawa in March
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Opening
First lifts in Japan
1 Nov – 31 MarSki seasonThe Prince resort makes snow in cold, dry air and usually opens on 1 November, weeks before anywhere else in Nagano has any. Short, groomed runs and a Tokyo day-trip crowd. Source ↗
- Season
Snow season
Ski seasonAbout 35 cm of snow falls in the month.
from the climate normals
Nearby, and something's on
Within 300 km of Karuizawa — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Karuizawa?
Karuizawa in March — FAQ
- Is March a good time to visit Karuizawa?
- March in Karuizawa: cold, rainy, with reliable snow — a good time to visit. It ranks #9 of 12 months for Karuizawa on SeasonMap's comfort score (63/100).
- What is the weather like in Karuizawa in March?
- In March, Karuizawa averages a daily high of 8.9°C and a low of -4.6°C, with about 106.1 mm of rain over roughly 11.5 rainy days.
- What is the air quality in Karuizawa in March?
- Karuizawa has a mean US Air Quality Index of about 51 in March.
- Does it snow in Karuizawa in March?
- Karuizawa sees roughly 35 cm of snowfall in March.
Other months in Karuizawa
Compare Karuizawa in March
Warmer or cooler than Karuizawa in March
Similar destinations in East Asia — March
Within 300 km: Tokyo's Plum blossom around 10 Feb – 10 Mar, and Kyoto's Plum blossom around 5 Feb – 10 Mar.