WEATHERblaze

Ishikawa Historical Weather Data & Climate

Historical Climate Data for 17 Cities
1981–2025
Japan

Quick Climate Facts

(19812025)
Hottest City
🔥
Uchinada
Jul High 31.2°C
Coldest City
❄️
Uchinada
Jan Low -8.8°C
Wettest City
🌧
Nomimachi
2048 mm/yr
Driest City
🏜️
Noto
1772 mm/yr
Hottest Month
🌡
August
Avg 26.1°C
Max 31.5°C
Coldest Month
🧊
February
Avg 4.1°C
Min -3.0°C
Cities With Data
🏙️
17
cities in Ishikawa
Data Coverage
📅
45 yrs
19812025

Ishikawa Climate Overview

Ishikawa has a warm temperate climate with warm summers and cold winters.

Ishikawa has an average annual temperature of 14.3°C across all 17 cities, with approximately 1971 mm of annual precipitation and average humidity of 79%. Temperatures peak in August and drop to their lowest in February, while rainfall is highest during winter months.

The warmest city is Uchinada with average July highs of 31.2°C, while Uchinada is the coldest with average January lows of -8.8°C. Humidity remains high throughout the year creating cold and damp conditions. These seasonal patterns make summer pleasant for travel, while winters can bring frost and occasional snowfall.

🏙️ Cities in Ishikawa — Weather History

📊 Ishikawa Monthly Climate Data

Monthly Climate Data
Month🌤️HighLowAvgHumid %Rain (mm)Wind (m/s)Solar (kWh/m²)
January🌧️10.2°C-2.9°C3.6°C82%1905.21.60
February11.2°C-3.0°C4.1°C80%1304.92.40
March15.4°C-0.8°C7.3°C77%1284.53.60
April20.1°C2.6°C11.3°C76%1204.04.70
May23.8°C7.8°C15.8°C78%1273.55.20
June🌧️26.7°C13.5°C20.1°C81%1593.05.00
July🌧️30.1°C18.5°C24.3°C84%2053.14.90
August🌧️31.5°C20.7°C26.1°C81%1603.25.10
September🌧️29.5°C15.8°C22.7°C79%2073.63.90
October🌧️24.6°C9.4°C17.0°C77%1514.03.10
November🌧️19.8°C4.2°C12.0°C78%1784.52.10
December🌧️14.8°C-0.5°C7.1°C81%2175.11.50

Showing average climate conditions across 45 years (1981–2025) · averaged across all 17 cities in Ishikawa

🌦 Weather in Ishikawa Across Seasons

❄️ Winter in Ishikawa

February is Ishikawa's coldest month, with average lows reaching -3.0°C.
🌡️December to February (avg) · -2.1°C12.1°C

🧥 Expect frosty nights and below-freezing temperatures during this Cold Winter period.

☀️ Summer in Ishikawa

Summer temperatures in Ishikawa peak in August, climbing to 31.5°C.
🌡️July to September (avg) · 18.3°C30.4°C

🌤️ Early mornings and evenings are most comfortable during this Hot Summer season.

🌧️ Rainy Season in Ishikawa

Ishikawa sees its highest rainfall in December, receiving approximately 217 mm of precipitation.
🌧️July to December (avg) ·  up to 217 mm

☔ Heavy Rainfall expected — carry rain gear and plan outdoor activities around these months.

📈 Ishikawa Monthly Averages

🌡️ Temperature Patterns

Region-wide monthly averages across 17 cities · 19812025 · °C

🌡️ Ishikawa Monthly Temperature Guide

August is the hottest month in Ishikawa, with average highs reaching 31.5°C, while February is the coldest with lows dropping to -3.0°C.

Temperatures rise steadily from spring, peak in August, and gradually decline through autumn into winter.

These seasonal patterns make summer pleasant for travel, while winters can bring frost and occasional snowfall.

🌧️ Rainfall Distribution

Region-wide monthly rainfall · 19812025 · mm/month

💨 Humidity & Wind Speed

Monthly averages · 19812025

🌧 Rainfall & Humidity in Ishikawa

Ishikawa receives its highest rainfall in December, while humidity peaks during summer months.
🌧️ Wettest: December217 mm☀️ Driest: April120 mm

💧 Humidity peaks at 84% in July · annual avg 79%

📅 Ishikawa Yearly Climate Trends

The warmest year on record was 2023 (avg: 16.0°C), while the coldest year was 1986 (avg: 13.0°C).

📊 Key Climate Trends

  • 🌡️ Ishikawa's temperature shows a slight warming trend over the past decade
  • 📈 Minimum temperatures show a slight warming trend in recent years
  • 🌧️ Rainfall has increased noticeably in recent years compared to earlier periods

🌡️ Annual Temperature Trend

View Range:

Averaged across all 17 cities in Ishikawa · Last 10 years · °C

Ishikawa's temperature shows a slight warming trend over the past decade. The region-wide average sits at 14.3°C with annual rainfall averaging 1971 mm.

🌧️ Annual Precipitation

View Range:

Averaged across all 17 cities in Ishikawa · Last 10 years · mm/year

Annual rainfall in Ishikawa shows noticeable variation. Rainfall has increased noticeably in recent years compared to earlier periods.
📅 Yearly Climate Data Overview

🔥 hottest  ·  ❄️ coldest  ·  🌧️ wettest

ℹ️ Values are averages across all 17 cities in Ishikawa for each year.

YearMin TempAvg TempMax TempRainfall (mm)Avg HumidityAvg Wind
2025
8.7°C15.7°C22.6°C251379%4.2 m/s
2024 🌧️
8.8°C15.8°C22.7°C252781%4.2 m/s
2023 🔥
8.6°C16.0°C23.4°C214379%4.0 m/s
2022
8.0°C15.2°C22.3°C199178%4.0 m/s
2021
8.2°C15.2°C22.1°C218079%4.2 m/s
2020
8.6°C15.4°C22.2°C201979%4.0 m/s
2019
8.2°C15.5°C22.7°C174277%3.9 m/s
2018
7.5°C15.3°C23.0°C234979%4.1 m/s
2017
7.4°C14.2°C21.0°C211278%4.2 m/s
2016
7.6°C15.1°C22.5°C198279%4.0 m/s

Showing 1 to 10 of 45 years

🏙️ Explore More Cities in Ishikawa

❓ Frequently Asked Questions

What is the hottest city in Ishikawa?
Uchinada is the hottest city in Ishikawa with an average July high of 31.2°C based on 45 years of data. View Uchinada weather history →
What is the coldest city in Ishikawa?
Uchinada is the coldest city with average January lows of -8.8°C. View Uchinada weather history →
Which city in Ishikawa gets the most rain?
Nomimachi is the wettest city in Ishikawa with approximately 2048 mm of annual precipitation on average.
What is the warmest month in Ishikawa?
August is the warmest month in Ishikawa, with region-wide average highs of 31.5°C and average lows of 20.7°C.
What is the coldest month in Ishikawa?
February is the coldest month in Ishikawa with average lows of -3.0°C and average highs of 11.2°C.
What is the rainiest month in Ishikawa?
December is the rainiest month in Ishikawa with approximately 217 mm on average, while April is the driest with 120 mm.
How many cities in Ishikawa have weather data?
WeatherBlaze has historical weather data for 17 cities in Ishikawa, covering 45 years of climate records from 1981 to 2025.
Where does this climate data come from?
All data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis data. It includes monthly temperature, precipitation, humidity, wind speed, and solar radiation.

📡 Data Source

All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.

Parameters included:
  • Temperature (Min, Max)
  • Precipitation
  • Relative Humidity
  • Wind Speed
  • Solar Radiation
Data specifications:
  • Resolution: Monthly
  • Spatial: 0.5° × 0.625°
  • Source: MERRA-2
  • Coverage: 19812025
  • Cities: 17 in Ishikawa