Guide · Best time

Cebu whale shark season: when to go to Oslob

The Cebu whale shark season at Oslob never really closes, since the sharks are fed every morning. What changes is how many come, how wet the month is and how long you queue.

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Editorial team, oslobwhalesharkwatching.comUpdated October 22, 2026Reading time 6 min13 sources

This guide's tour Oslob Whale Sharks and Kawasan Canyoneering Day 4.7 (728 reviews) 16 hoursWhale sharks and Kawasan FallsHotel pickup and lunch from$127per person Check availabilityFree cancellation until 24 hrs before pickup

Quick answer

01All year: The Oslob sharks are fed daily, year-round.¹
02Most sharks: Weekly numbers peaked between May and November.²
03Driest month: April, with 56 mm of rain in the Tagbilaran record.³
04Time of day: Watchers may enter from 6 am to 1 pm.⁴
05Queue: Peak-season waits average 2 to 3 hours.

Whale sharks every day of the year

Unlike the seasonal whale shark sites of the Philippines, Oslob has sharks all year. They are provisioned daily, year-round.¹ Before the feeding began in 2011, whale sharks were seen only sporadically off Oslob.⁵ Today you can plan a trip for almost any week and expect to see them.

The number of sharks does vary. Over a three-year study, an average of 18.6 individual sharks were seen per week, but the weekly count ranged from 6 to 43.⁶ Seasonal peaks generally fell between May and November each year.² If you want the best chance of several sharks around your boat, those months are the strongest.

No study can tell you the count for your visit, but the numbers show that the Cebu whale shark season is less about whether the sharks are there and more about how many share the water with you.

A whale shark morning

The best hours at Tan-awan

2:00 to 3:00 AM

Tour pickup

On the booked tour, to reach the queue early.
6 am

Water opens

Watchers may enter the interaction area.⁴
Minutes later

Sharks arrive

Experienced sharks follow the feeder boats.⁷
Mid-morning

Peak crowds

Waits average 2 to 3 hours in peak season.
1 pm

Water closes

No watchers allowed after that.⁴

Month by month: heat and rain

Southern Cebu is hot all year. The nearest NOAA weather station, Tagbilaran across the strait on Bohol, has January as its coolest month for daytime highs, at 30.8 °C, and May as its hottest, at 33.2 °C.³ Nights stay mild, with average lows between 23.2 °C in January and 24.7 °C in July.³

Rain is what changes. April is the driest month in that record, with 56 mm and 3 days of at least 2.5 mm.³ The wettest stretch runs from October to December: 154 mm in October, 146 mm in November and 175 mm in December.³ Wet weather can make the sea choppier and the road south slower.

Daylight barely changes so close to the equator. The sun is above the horizon for 11.6 hours at mid-December and 12.7 hours at mid-June.³ With pickups in the middle of the night, you will start in the dark whatever the month. Plan your rest days around that early start rather than around the weather.

Month by month

Night hours and rain days across the year

Hours without sunDays with precipitationSeason

Bars show, month by month, how long the night lasts in mid-month and on how many days rain reaches 2.5 mm, from the NOAA station Tagbilaran, April 1971 to 2020, other months 1991 to 2020.³

Climate

Daylight, heat and rain near Oslob

Month	Daylight (h)	Darkness (h)	High / low	Wet days	Whale shark peak
Jan	11.6	12.4	31 / 23 °C	6
Feb	11.8	12.2	31 / 23 °C	6
Mar	12.1	11.9	32 / 23 °C	6
Apr	12.3	11.7	33 / 24 °C	3
May	12.5	11.5	33 / 25 °C	6	peak
Jun	12.7	11.3	33 / 25 °C	8	peak
Jul	12.6	11.4	32 / 25 °C	9	peak
Aug	12.4	11.6	33 / 25 °C	6	peak
Sep	12.2	11.8	32 / 24 °C	7	peak
Oct	11.9	12.1	32 / 24 °C	10	peak
Nov	11.7	12.3	32 / 24 °C	11	peak
Dec	11.6	12.4	32 / 24 °C	9

Tagbilaran, across the Bohol Strait from Oslob: sunlit hours in mid-month, typical daytime high, typical night low, and rainy days (2.5 mm or more), NOAA April 1971 to 2020, other months 1991 to 2020.³ Season according to Thomson et al., Royal Society Open Science (2017).²

Three ways to time it

Pick your season

Least rain

Dry season

February to April

Rain: 56 to 90 mm
Rain days: 3 to 6
Sharks: Present all year

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Most sharks

Peak sharks

May to November

Rain: 91 to 154 mm
Highs: 31.8 to 33.2 °C
Sharks: Seasonal peak

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Wettest

Wet end of year

December and January

Rain: 82 to 175 mm
Highs: 30.8 to 31.5 °C
Sharks: Present all year

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Decision helper

When should you go?

Match the month to your priorities

I want the most sharks I want dry weather I hate crowds I also want Donsol

May to November

Weekly numbers peaked in those months.²

April

The driest month, with 56 mm of rain.³

The earliest slot on a weekday

The water opens to watchers at 6 am.⁴

December to June

Donsol was surveyed in those months.⁸

The best months for a whale shark trip

For the most sharks, aim for May to November.² Within that window, May is still fairly dry, with 91 mm and 6 rain days, and August has 101 mm and 6 rain days.³ June and July bring more rain, with 131 mm and 150 mm.³

For the driest weather, aim for February to April. Those months see 84 mm, 90 mm and 56 mm of rain, and no more than 6 rain days each.³ You may share the water with fewer sharks than in the peak months, but drier days make the canyon, the falls and the long drive more pleasant.

If your trip combines the sharks with Kawasan canyoneering or Sumilon Island, weigh the whole day. Rivers and waterfalls run stronger after rain, the sandbar depends on the tide, and a dry month makes the long drive back easier. A shoulder month such as May or August balances the two.

Checklist

Timing your whale shark day

Choose

A weekday early in your stay
The earliest pickup offered
A dry month if you add the canyon

Bring

Hat and water for the queue
A rain jacket from June on
Something to read while you wait

Video

What Swimming with Whale Sharks in the Philippines is Really Like

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What time is whale shark watching in Oslob?

The water at Tan-awan is open to watchers from 6 am to 1 pm, and no one is allowed into the interaction area outside those hours.⁴ Feeding runs over the same morning, from 06.00 to 13.00.⁹ The Province of Cebu describes swimming with the sharks during designated hours of the day.¹⁰

Earlier is better for most visitors. Tours leave in the middle of the night to get a good place in the queue: the booked tour picks up between 2:00 and 3:00 AM, and another listing says early departure secures a better queue position. Sharks that know the site well appear within minutes of the feeder boats.⁷

Late morning brings the crowds. Oslob receives more than 500,000 tourists a year, and every one of them fits into the same morning window.¹¹ ⁴ If you stay overnight in Oslob, you can be among the first in the water at 6 am without the night drive. Either way, the first boats of the morning meet sharks that have only just arrived at the feeders, and the line of boats behind you is at its shortest.

Queues, weekends and holidays

Waiting is part of the morning. In the busy months two listings expect you to queue for 2 to 3 hours on average. Guests on the booked tour describe waiting in the sun for their number; bring a hat, water and something to read.

If your dates are flexible, ask your operator which days are quietest, and take the earliest pickup available on your tour. The few minutes you gain in the queue are minutes you spend in the water instead of on the beach.

The visitors center at Tan-awan serves as the waiting area for tourists.¹² In 2026 the province opened new comfort rooms with showers for swimmers at the briefing center, which makes the wait easier than it used to be.¹³

Dressing for the heat and the water

Plan for heat rather than cold. Average daytime highs in the Tagbilaran record stay at 30.8 °C or above in every month, and even the coolest nights average 23.2 °C.³ Light, quick-drying clothes work best, with swimwear underneath from the moment you are picked up.

In the water, a long-sleeved rash guard is the most useful piece of kit. It shields your back and shoulders as you drift with your face in the water, and it means you need little or no sunscreen, which the dive listing names as prohibited near the sharks. A thin layer also keeps you comfortable if you stay in the water for the full half hour.

Pack a light rain jacket for the wetter months and a dry bag for your phone all year. A hat and plenty of water matter more than anything else during the wait on the beach, where shade can be scarce in the middle of the morning.

If the weather turns, and other planning

Rough sea is the one thing that can change the plan at short notice. The dive listing warns that its trip depends on the weather and may be rescheduled or cancelled for safety in poor sea conditions. Snorkel trips face the same sea, and the boatmen decide on the day.

If the forecast looks bad, decide two days ahead. Cancelling is free only until 24 hours before the start, and with a pickup at 2 AM that deadline falls in the early hours of the day before; after it, the operator's terms apply. That is one more reason to schedule the whale shark day early in your stay rather than on the last morning. If you also plan to dive, leave a gap before your flight home. The scuba listing asks guests not to fly for at least 18 hours after diving.

Finally, think about what else you want from the south. Donsol was surveyed from December to June, so a trip in those months could combine Oslob with Donsol on another island.⁸ Our page on the other sites compares them. Two whale shark sites in one trip also gives you a spare chance if the sea closes one of them.

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