Climate for Station: Saigo, Shimane, Japan

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Saigo

Shimane, Japan

2026-03-01 11:26

7.1°C

Feels 3.4°C

H: 7.6°C / L: 5°C

Precip: 0mm | Wind: 23.8 kph

▼ 1.3°C vs historical high

Sunny

2026-03-02

H: 8.2°C

L: 6.3°C

Rain: 0%

Rainfall: 0.03mm

Wind: 37.1kph

▼ 0.8°C

2026-03-03

H: 7.8°C

L: 7.3°C

Rain: 85%

Rainfall: 11.39mm

Wind: 41kph

▼ 1.3°C

2026-03-04

H: 7.4°C

L: 5.4°C

Rain: 86%

Rainfall: 0.38mm

Wind: 22.3kph

▼ 2.3°C

2026-03-05

H: 7.4°C

L: 4.9°C

Rain: 0%

Rainfall: 0.04mm

Wind: 19.8kph

▼ 2.2°C

2026-03-06

H: 10.6°C

L: 6.2°C

Rain: 84%

Rainfall: 1.88mm

Wind: 41.4kph

▲ 0.9°C

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Climate Analysis & Overview

Saigo's climate profile reveals a nuanced interplay between warming trends over the long term and recent cooling over the past decade. The region has experienced a more even distribution of precipitation, contributing to a unique local climate dynamic. These trends align with Japan's broader climate goals of achieving a balanced and sustainable environment.

Geographical Influences and Climate Classification

Saigo is situated in the Oki Islands, part of Shimane Prefecture, Japan, and falls under the Köppen climate classification Cfa, which denotes a humid subtropical climate. This classification is characterised by hot, humid summers and mild winters. The island's geography, surrounded by the Sea of Japan, plays a significant role in moderating temperatures and influencing precipitation patterns. The maritime influence ensures that extremes in temperature are somewhat tempered, contributing to the overall climate stability.

Temperature Trends: A Tale of Two Timelines

Over the all-time record, Saigo has experienced a slight warming trend, with high temperatures rising by 0.11°C (0.20°F) and low temperatures increasing more significantly by 0.51°C (0.92°F). This warming aligns with global climate change patterns, suggesting a gradual increase in baseline temperatures. However, the past decade tells a different story, with high temperatures showing a cooling trend of -0.66°C (-1.19°F) and lows decreasing by -0.18°C (-0.33°F). This recent cooling could be attributed to regional climate variability or specific local factors, such as changes in sea surface temperatures or shifts in atmospheric circulation patterns.

Precipitation Patterns: Towards Even Distribution

The Precipitation Concentration Index (PCI) for Saigo has decreased from a baseline of 11.32 to 9.97, indicating a more even distribution of rainfall events. A PCI below 10 suggests that precipitation is spread more evenly throughout the year, reducing the risk of intense, concentrated rainfall events that can lead to flooding. This shift towards a more balanced precipitation pattern is beneficial for water resource management and aligns with Japan's climate resilience strategies.

Extreme Weather Records

Saigo's climate records highlight the potential for extreme weather events, with an all-time high of 38.8°C (101.8°F) and a low of -9.5°C (14.9°F). These extremes underscore the variability inherent in the region's climate, influenced by both its subtropical classification and maritime location. Such records are critical for understanding potential future climate scenarios and preparing for possible impacts on local ecosystems and human activities.

Aligning with Regional Climate Goals

Japan's commitment to addressing climate change is reflected in its regional climate goals, which aim to reduce greenhouse gas emissions and enhance climate resilience. Saigo's climate trends, particularly the more even distribution of precipitation, support these objectives by promoting sustainable water management and reducing the risks associated with extreme weather events. As Japan continues to implement its climate policies, understanding local climate dynamics, such as those observed in Saigo, will be essential for achieving national and regional environmental targets.

Station Statistics

10-Year Trend

High: -1.17 °C/decade

Low: -0.07 °C/decade

Rain: -1.55 mm/decade

25-Year Trend

High: -0.22 °C/decade

Low: +0.03 °C/decade

Rain: -0.35 mm/decade

50-Year Trend

High: +0.08 °C/decade

Low: +0.75 °C/decade

Rain: -0.05 mm/decade

All-Time Trend

High: +0.10 °C/decade

Low: +0.52 °C/decade

Rain: -0.07 mm/decade

Percentage Above-Average Days

Last 12 Months: 44.4%

This Year: 55.3%

Precipitation Concentration Index (PCI) ℹ️

Last 12 Months: 9.4

Historical Average: 11.8

Percentile Rank of Last 12 Months ℹ️

High: 27^th percentile

Low: 90^th percentile

Rain: 21^st percentile

Change in Variance ℹ️

High: -6.5%

Low: -1.0%

Intraday: -13.8%

Data Coverage

95.5%

First Year of Data

1991

Station Location

Historical Weather Records

	Max High	Avg High	Min High	Max Avg	Avg Avg	Min Avg	Max Low	Avg Low	Min Low	Max Precipitation	Avg Precipitation	Max Snow	Avg Snow
Record	38.8 °C	—	-3.5 °C	30.8 °C	—	-6.2 °C	29.0 °C	—	-9.5 °C	203.5 mm	—	—	—
January	17.2 °C	7.5 °C	-1.7 °C	15.2 °C	4.3 °C	-3.7 °C	13.0 °C	1.9 °C	-5.7 °C	66.0 mm	5.5 mm	—	—
February	20.1 °C	7.9 °C	-3.5 °C	17.2 °C	4.4 °C	-6.2 °C	14.0 °C	1.6 °C	-9.5 °C	65.0 mm	4.3 mm	—	—
March	22.5 °C	11.0 °C	-1.3 °C	18.3 °C	7.2 °C	-3.6 °C	14.2 °C	3.4 °C	-6.7 °C	96.0 mm	3.9 mm	—	—
April	26.8 °C	16.1 °C	5.2 °C	20.9 °C	12.1 °C	1.8 °C	18.4 °C	7.6 °C	-3.2 °C	120.9 mm	4.2 mm	—	—
May	31.0 °C	20.5 °C	11.5 °C	24.7 °C	16.5 °C	7.2 °C	20.7 °C	12.2 °C	1.4 °C	122.9 mm	4.2 mm	—	—
June	32.2 °C	23.6 °C	14.6 °C	28.4 °C	20.2 °C	12.4 °C	24.6 °C	16.9 °C	6.8 °C	177.0 mm	5.6 mm	—	—
July	34.9 °C	27.5 °C	19.4 °C	30.1 °C	24.5 °C	16.8 °C	27.7 °C	21.8 °C	11.5 °C	203.5 mm	6.8 mm	—	—
August	38.8 °C	29.4 °C	21.2 °C	30.8 °C	26.0 °C	19.0 °C	28.9 °C	23.2 °C	13.5 °C	140.5 mm	4.7 mm	—	—
September	33.9 °C	25.6 °C	17.7 °C	29.9 °C	22.1 °C	12.8 °C	29.0 °C	19.3 °C	7.3 °C	191.0 mm	7.1 mm	—	—
October	30.0 °C	20.7 °C	10.9 °C	25.2 °C	16.6 °C	5.8 °C	23.7 °C	13.4 °C	2.8 °C	124.8 mm	4.0 mm	—	—
November	24.1 °C	15.7 °C	3.9 °C	21.4 °C	11.8 °C	2.5 °C	20.2 °C	8.7 °C	-1.5 °C	62.1 mm	4.5 mm	—	—
December	20.1 °C	10.6 °C	-0.5 °C	17.7 °C	7.1 °C	-2.3 °C	15.7 °C	4.4 °C	-4.5 °C	82.0 mm	5.1 mm	—	—