Climate for Station: Aparri, Cagayan, Philippines

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Santelmo

Cagayan, Philippines

2026-03-01 10:25

26°C

Feels 27.7°C

H: 28.8°C / L: 21°C

Precip: 0mm | Wind: 12.6 kph

▲ 0.0°C vs historical high

Sunny

2026-03-02

H: 28.9°C

L: 21.5°C

Rain: 0%

Rainfall: 0mm

Wind: 14.4kph

▲ 0.2°C

2026-03-03

H: 28.5°C

L: 21.9°C

Rain: 89%

Rainfall: 0.43mm

Wind: 21.6kph

▼ 0.4°C

2026-03-04

H: 25.5°C

L: 22.9°C

Rain: 89%

Rainfall: 9.11mm

Wind: 27.4kph

▼ 3.3°C

2026-03-05

H: 24.1°C

L: 22.6°C

Rain: 82%

Rainfall: 6.02mm

Wind: 21.2kph

▼ 4.8°C

2026-03-06

H: 26.2°C

L: 21.4°C

Rain: 88%

Rainfall: 1.03mm

Wind: 17.6kph

▼ 2.9°C

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Climate Analysis & Overview

Aparri, situated in the Cagayan Valley of the Philippines, is experiencing a complex climate pattern with a notable 1.27°C (2.28°F) rise in high temperatures over the past decade, juxtaposed with a 1.15°C (2.07°F) decline in low temperatures. This dynamic is set against a backdrop of more evenly distributed rainfall, as indicated by a decrease in the Precipitation Concentration Index.

Geographical Influence and Climate Classification

Aparri is located at the northern tip of Luzon, where the Cagayan River meets the Babuyan Channel. This geographical setting subjects it to a tropical monsoon climate, classified as "Am" under the Köppen system. The proximity to the ocean and the river significantly influences its weather patterns, often leading to high humidity and substantial rainfall, especially during the monsoon season. The coastal location also exposes Aparri to typhoons, which can exacerbate temperature fluctuations and precipitation patterns.

Temperature Trends: A Decade of Change

Over the last ten years, Aparri has experienced a significant warming trend in daytime temperatures, with highs increasing by 1.27°C (2.28°F). This warming trend contrasts sharply with the cooling of nighttime temperatures, which have decreased by 1.15°C (2.07°F). These opposing trends may suggest shifts in atmospheric circulation patterns or changes in cloud cover that affect day and night temperatures differently.

Long-term Temperature Stability

When examining all-time temperature trends, Aparri presents a picture of relative stability. The highs have shown a negligible increase of 0.00°C (0.00°F), while the lows have risen by 0.24°C (0.43°F). This long-term stability contrasts with the more pronounced changes observed over the past decade, suggesting that recent climatic shifts may be part of a shorter-term variability rather than a sustained long-term trend.

Precipitation Patterns: A More Even Distribution

The Precipitation Concentration Index (PCI) has decreased from a baseline of 14.76 to 13.41, indicating a more even distribution of rainfall throughout the year. This shift suggests that rainfall events are becoming less concentrated, potentially reducing the risk of extreme flooding events that can occur when precipitation is highly concentrated. This change aligns with broader regional goals to mitigate the impacts of climate variability and enhance resilience against extreme weather events.

Record Temperatures and Regional Context

Aparri's climate records show a maximum temperature of 39.2°C (102.6°F) and a minimum of 13.7°C (56.7°F). These extremes highlight the potential for significant temperature variability in the region. The Philippines has been actively working towards enhancing climate resilience, with initiatives focusing on improving weather forecasting and disaster preparedness. These efforts are crucial in a region where climate variability can have profound impacts on agriculture, infrastructure, and livelihoods.

Station Statistics

10-Year Trend

High: +1.59 °C/decade

Low: -1.50 °C/decade

Rain: +1.08 mm/decade

25-Year Trend

High: -0.42 °C/decade

Low: +0.42 °C/decade

Rain: +1.03 mm/decade

50-Year Trend

High: -0.09 °C/decade

Low: +0.43 °C/decade

Rain: +0.43 mm/decade

All-Time Trend

High: +0.02 °C/decade

Low: +0.23 °C/decade

Rain: -0.03 mm/decade

Percentage Above-Average Days

Last 12 Months: 47.4%

This Year: 17.5%

Precipitation Concentration Index (PCI) ℹ️

Last 12 Months: 11.7

Historical Average: 14.7

Percentile Rank of Last 12 Months ℹ️

High: 30^th percentile

Low: 83^rd percentile

Rain: 91^st percentile

Change in Variance ℹ️

High: -0.2%

Low: +11.0%

Intraday: +28.8%

Data Coverage

88.9%

First Year of Data

1950

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	39.2 °C	—	18.6 °C	33.8 °C	—	17.6 °C	29.2 °C	—	10.0 °C	453.0 mm	—	—	—
January	33.4 °C	26.8 °C	18.6 °C	28.2 °C	23.9 °C	17.6 °C	25.4 °C	20.9 °C	15.0 °C	131.0 mm	4.0 mm	—	—
February	38.8 °C	27.9 °C	20.0 °C	28.9 °C	24.5 °C	18.4 °C	25.1 °C	21.2 °C	13.7 °C	73.9 mm	2.5 mm	—	—
March	36.0 °C	29.8 °C	19.6 °C	29.7 °C	26.1 °C	20.4 °C	26.1 °C	22.5 °C	14.3 °C	63.0 mm	1.4 mm	—	—
April	37.5 °C	31.8 °C	22.2 °C	31.3 °C	27.7 °C	22.0 °C	27.8 °C	24.0 °C	18.3 °C	67.0 mm	1.1 mm	—	—
May	39.0 °C	33.1 °C	23.5 °C	32.8 °C	28.8 °C	24.6 °C	28.9 °C	24.9 °C	21.0 °C	153.0 mm	3.5 mm	—	—
June	38.9 °C	33.4 °C	25.6 °C	33.8 °C	29.1 °C	23.5 °C	29.0 °C	25.2 °C	19.0 °C	205.0 mm	5.3 mm	—	—
July	37.2 °C	32.8 °C	24.2 °C	32.2 °C	28.7 °C	23.9 °C	29.2 °C	25.1 °C	20.0 °C	223.0 mm	6.5 mm	—	—
August	37.5 °C	32.2 °C	25.6 °C	32.0 °C	28.4 °C	24.0 °C	29.0 °C	24.9 °C	20.0 °C	204.0 mm	7.8 mm	—	—
September	36.1 °C	31.7 °C	24.5 °C	30.8 °C	28.0 °C	23.9 °C	28.5 °C	24.7 °C	20.1 °C	253.0 mm	8.6 mm	—	—
October	39.2 °C	30.5 °C	24.4 °C	30.4 °C	27.3 °C	23.4 °C	28.2 °C	24.1 °C	19.5 °C	276.0 mm	10.4 mm	—	—
November	35.5 °C	29.0 °C	22.3 °C	30.4 °C	26.2 °C	20.5 °C	28.0 °C	23.3 °C	14.5 °C	453.0 mm	11.5 mm	—	—
December	33.0 °C	27.2 °C	21.3 °C	28.3 °C	24.5 °C	19.8 °C	26.5 °C	21.9 °C	10.0 °C	179.0 mm	7.0 mm	—	—