Best places for hammerheads in December
20 trip bases match. Ranked for any diver.
Typical values are 1991–2020 averages and our site seasons.
Live switches on 48 hours before your trip. Add a start date under When.
BestGoodPossibleOff seasonYour month
#1IndonesiaLiveaboard or day boat●●○Medium confidence: One factor not sourced yet - Strength: 8 of 8 sites are in season in December
- Strength: Calm seas on almost every day
- Trade-off: Rain on most days
- Unknown: Hammerheads in December: we don't know yet
JFMAMJJASOND
Best October to AprilWhy this match: 37 + 16 + 19 + 6 = 78
Season37 / 38
8 of 8 sites are in season in December; calm on almost every day.
Interests16 / 31
Hammerheads: we don't know yet in December. Not known yet, so it counts as half.
Your level19 / 19
No level picked, so all 8 sites count.
Weather6 / 13
Rain on most days; no real storm risk.
Points are scaled so the factors you set add up to 100. How we rank
#2PhilippinesDay boat only●●○Medium confidence: One factor not sourced yet - Strength: 4 of 4 sites are in season in December
- Strength: Calm seas on almost every day
- Trade-off: Storm risk: a named storm passed within 250 km in 33% of Decembers
- Unknown: Hammerheads in December: we don't know yet
JFMAMJJASOND
Best November to MayWhy this match: 36 + 16 + 19 + 6 = 77
Season36 / 38
4 of 4 sites are in season in December; calm on almost every day.
Interests16 / 31
Hammerheads: we don't know yet in December. Not known yet, so it counts as half.
Your level19 / 19
No level picked, so all 4 sites count.
Weather6 / 13
Rain on more than half the days; named storm nearby in 33% of years.
Points are scaled so the factors you set add up to 100. How we rank
#3MexicoLiveaboard only●●○Medium confidence: 3 sites on Divetip so far - Strength: Hammerheads: likely in December
- Strength: 3 of 3 sites are in season in December
- Strength: Water 25–26°C in December
- Trade-off: Rough seas on most days
JFMAMJJASOND
Good November to MayWhy this match: 27 + 19 + 19 + 12 = 77
Season27 / 38
3 of 3 sites are in season in December; calm on about 1 day in 10.
Interests19 / 31
Hammerheads: likely in December.
Your level19 / 19
No level picked, so all 3 sites count.
Weather12 / 13
Rain on about 1 day in 10; no real storm risk.
Points are scaled so the factors you set add up to 100. How we rank
#4PhilippinesShore or day boat●●○Medium confidence: One factor not sourced yet - Strength: 4 of 4 sites are in season in December
- Strength: Calm seas on most days
- Trade-off: Storm risk: a named storm passed within 250 km in 20% of Decembers
- Unknown: Hammerheads in December: we don't know yet
JFMAMJJASOND
Best November to MayWhy this match: 35 + 16 + 19 + 5 = 75
Season35 / 38
4 of 4 sites are in season in December; calm on most days.
Interests16 / 31
Hammerheads: we don't know yet in December. Not known yet, so it counts as half.
Your level19 / 19
No level picked, so all 4 sites count.
Weather5 / 13
Rain on most days; named storm nearby in 20% of years.
Points are scaled so the factors you set add up to 100. How we rank
#5ThailandLiveaboard or day boat●●○Medium confidence: One factor not sourced yet - Strength: 3 of 4 sites are in season in December
- Strength: Calm seas on almost every day
- Strength: Water 28–29°C in December
- Unknown: Hammerheads in December: we don't know yet
JFMAMJJASOND
Best December to AprilWhy this match: 30 + 16 + 19 + 10 = 75
Season30 / 38
3 of 4 sites are in season in December; calm on almost every day.
Interests16 / 31
Hammerheads: we don't know yet in December. Not known yet, so it counts as half.
Your level19 / 19
No level picked, so all 4 sites count.
Weather10 / 13
Rain on about 1 day in 5; no real storm risk.
Points are scaled so the factors you set add up to 100. How we rank
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Always check local conditions with your dive centre. Rankings are never paid for. Every month also has its own page: where to dive in December.
