Biak-na-Bato National Park

National Park Protected park with caves, rivers, and historic sites

A Philippine national park preserving caves, river gorges and historic sites tied to the 1897 revolutionary headquarters; visitors come for hiking, cave exploration and history.

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Biak-na-Bato National Park is a protected area in Bulacan province in the Central Luzon region of the Philippines that conserves karst plateaus, caves, and river valleys. The park is notable for its network of caves and rugged upland terrain as well as its role in Philippine revolutionary history.

Historically the cave complex was used by Emilio Aguinaldo and other revolutionary leaders in the late 19th century; the area is associated with the Pact of Biak-na-Bato of 1897. Today the park is visited for spelunking, hiking, and historical interest.

The park spans upland sections of Bulacan province and is accessed from towns in the surrounding lowlands; it protects both natural karst features and cultural-historical sites.

  • Historical significance: Site of the 1897 Pact of Biak-na-Bato negotiations and used as revolutionary headquarters by Emilio Aguinaldo during the Philippine Revolution.
  • Park purpose: Declared a national park to protect both its natural karst landscape and its role in Philippine history; visitors come for caves, hiking, and history interpretation.

What to See #

  • Aguinaldo Cave: A network of caves used historically as hideouts and headquarters during the Philippine revolutionary period, most notably Aguinaldo Cave which is associated with Emilio Aguinaldo.
  • Plateau and river valleys: Extensive upland terrain and river valleys that form the park's natural attractions, including karst formations and forested plateaus.
Biak-na-Bato National Park
Biak-na-Bato National Park, San Miguel, Bulacan / Central Luzon region, Philippines
15.1201, 121.0840
Daylight hours; visitor services vary by local management
Entrance fees apply; check the Philippines Department of Environment and Natural Resources or local park office for current rates

How to Get to Biak-na-Bato National Park #

Biak-na-Bato is in central Luzon. From Manila, drive north on the North Luzon Expressway (NLEX) and follow regional roads toward San Miguel, Bulacan; travel time is roughly 2-3 hours depending on traffic. Public buses to San Miguel are available from various terminals; arrange local transport to the park entrance.

Tips for Visiting Biak-na-Bato National Park #

  • Hire a local guide for rainforest trails and historical cave sites - guides know safe routes and local history.
  • Bring insect repellent and rain protection; sudden tropical showers are common year-round.
  • Combining a visit with a stay in nearby towns like San Miguel helps with logistics and local transportation.

Best Time to Visit Biak-na-Bato National Park #

A national park protecting karst landscapes and historical sites linked to the Philippine revolutionary era - best visited in the cool, dry season November-February.

Cool, dry season
November-February · 20-28°C
Most comfortable for hiking and exploring caves.
Shoulder season
March-May · 24-34°C
Hotter and more humid, but fewer crowds; bring water and plan early starts.

Weather & Climate near Biak-na-Bato National Park #

Climate

Biak-na-Bato National Park's climate is classified as Tropical Monsoon - Tropical Monsoon climate with consistently warm temperatures year-round. Temperatures range from 20°C to 33°C. Heavy rainfall (2517 mm/year), wettest in August with a pronounced dry season.

Air Quality: AQI 58 Moderate
Best Time to Visit
FebruaryJanuaryMarch
Temperature & Rainfall
Temperature Range
38°
Warmest Month
16°
Coldest Month
Monthly Conditions

January

January is warm with highs of 28°C and lows of 20°C. Moderate rainfall (33 mm) and mostly overcast skies.

79 Very Good

Comfort

24°
Feels Like Warm
24°C
Temperature
20° 28°
87%
Humidity
Very Humid

Weather

33 mm
Rainfall
1.7 m/s
Wind
Calm
1.5
UV Index
Very High
11.2h daylight

February

February is warm with highs of 30°C and lows of 20°C. The driest month with just 21 mm and partly cloudy skies.

85 Excellent

Comfort

25°
Feels Like Warm
25°C
Temperature
21° 30°
84%
Humidity
Very Humid

Weather

21 mm
Rainfall
1.8 m/s
Wind
Calm
1.9
UV Index
Very High
11.5h daylight

March

March is warm with highs of 31°C and lows of 22°C. Moderate rainfall (34 mm) and partly cloudy skies.

79 Very Good

Comfort

26°
Feels Like Warm
26°C
Temperature
22° 31°
80%
Humidity
Very Humid

Weather

34 mm
Rainfall
1.8 m/s
Wind
Calm
2.2
UV Index
Extreme
11.9h daylight

April

April is hot, feeling like 31°C due to high humidity. Moderate rainfall (62 mm).

77 Very Good

Comfort

31°
Feels Like Hot
28°C
Temperature
23° 33°
77%
Humidity
Very Humid

Weather

62 mm
Rainfall
1.6 m/s
Wind
Calm
2.5
UV Index
Extreme
12.4h daylight

May

May is the hottest month, feeling like 32°C due to high humidity. Heavy rain (213 mm) and partly cloudy skies.

61 Good

Comfort

32°
Feels Like Hot
28°C
Temperature
23° 33°
80%
Humidity
Very Humid

Weather

213 mm
Rainfall
1.7 m/s
Wind
Calm
2.4
UV Index
Extreme
12.7h daylight

June

June is hot, feeling like 31°C with oppressive humidity. Heavy rain (326 mm) and mostly overcast skies.

57 Acceptable

Comfort

31°
Feels Like Hot
27°C
Temperature
23° 31°
85%
Humidity
Very Humid

Weather

326 mm
Rainfall
1.6 m/s
Wind
Calm
2.3
UV Index
Extreme
12.9h daylight

July

July is warm with muggy conditions (dew point 24°C). Heavy rain (471 mm) and mostly overcast skies.

63 Good

Comfort

27°
Feels Like Warm
27°C
Temperature
23° 30°
88%
Humidity
Very Humid

Weather

471 mm
Rainfall
1.9 m/s
Wind
Calm
2.2
UV Index
Extreme
12.8h daylight

August

August is warm with muggy conditions (dew point 24°C). The wettest month with heavy rain (478 mm) and mostly overcast skies.

63 Good

Comfort

27°
Feels Like Warm
27°C
Temperature
23° 30°
90%
Humidity
Very Humid

Weather

478 mm
Rainfall
1.9 m/s
Wind
Calm
2.1
UV Index
Extreme
12.5h daylight

September

September is warm with muggy conditions (dew point 24°C). Heavy rain (398 mm) and mostly overcast skies.

65 Good

Comfort

27°
Feels Like Warm
27°C
Temperature
23° 30°
89%
Humidity
Very Humid

Weather

398 mm
Rainfall
1.3 m/s
Wind
Calm
2.1
UV Index
Extreme
12.1h daylight

October

October is warm with muggy conditions (dew point 23°C). Heavy rain (230 mm) and mostly overcast skies.

65 Good

Comfort

26°
Feels Like Warm
26°C
Temperature
23° 30°
89%
Humidity
Very Humid

Weather

230 mm
Rainfall
1.8 m/s
Wind
Calm
1.8
UV Index
Very High
11.7h daylight

November

November is warm with muggy conditions (dew point 23°C). Significant rainfall (151 mm) and mostly overcast skies.

67 Good

Comfort

26°
Feels Like Warm
26°C
Temperature
22° 29°
90%
Humidity
Very Humid

Weather

151 mm
Rainfall
1.8 m/s
Wind
Calm
1.5
UV Index
Very High
11.3h daylight

December

December is warm with highs of 28°C and lows of 21°C. Regular rainfall (100 mm) and mostly overcast skies.

71 Very Good

Comfort

25°
Feels Like Warm
25°C
Temperature
21° 28°
90%
Humidity
Very Humid

Weather

100 mm
Rainfall
1.9 m/s
Wind
Calm
1.4
UV Index
High
11.1h daylight

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