Best places for mantas in September
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
#1IndonesiaDay boat only●●○Medium confidence: 3 sites on Divetip so far - Strength: Mantas: reliable in September (peak April to October)
- Strength: 3 of 3 sites are in season in September
- Strength: Calm seas on almost every day
- Trade-off: Rain on about half the days
JFMAMJJASOND
Best July to NovemberWhy this match: 37 + 31 + 19 + 9 = 96
Season37 / 38
3 of 3 sites are in season in September; calm on almost every day.
Interests31 / 31
Mantas: reliable in September.
Your level19 / 19
No level picked, so all 3 sites count.
Weather9 / 13
Rain on about half the days; no real storm risk.
Points are scaled so the factors you set add up to 100. How we rank
#2IndonesiaDay boat only●●○Medium confidence: 3 sites on Divetip so far - Strength: 3 of 3 sites are in season in September
- Strength: Calm seas on almost every day
- Strength: Water 29°C in September
- Trade-off: Mantas: possible in September, not reliable
JFMAMJJASOND
Best April to NovemberWhy this match: 37 + 9 + 19 + 10 = 75
Season37 / 38
3 of 3 sites are in season in September; calm on almost every day.
Interests9 / 31
Mantas: possible in September.
Your level19 / 19
No level picked, so all 3 sites count.
Weather10 / 13
Rain on about 1 day in 3; no real storm risk.
Points are scaled so the factors you set add up to 100. How we rank
#3ThailandDay boat only●●○Medium confidence: One factor not sourced yet - Strength: 3 of 3 sites are in season in September
- Strength: Water 28–29°C in September
- Trade-off: Rain on most days
- Unknown: Mantas in September: we don't know yet
JFMAMJJASOND
Best March to SeptemberWhy this match: 33 + 15 + 19 + 6 = 73
Season33 / 38
3 of 3 sites are in season in September; calm on more than half the days.
Interests15 / 31
Mantas: we don't know yet in September. Not known yet, so it counts as half.
Your level19 / 19
No level picked, so all 3 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
#4IndonesiaLiveaboard or day boat●○○Low confidence: Area base: 1 site on Divetip so far - Strength: Mantas: likely in September
- Strength: September is in season here
- Strength: Calm seas on almost every day
- Unknown: Area base: 1 site on Divetip so far
JFMAMJJASOND
Best April to DecemberWhy this match: 37 + 19 + 18 + 12 = 86
Season37 / 38
The site is in season in September; calm on almost every day.
Interests19 / 31
Mantas: likely in September.
Your level18 / 19
No level picked, so all 1 sites count.
Weather12 / 13
Rain on few days; no real storm risk.
Points are scaled so the factors you set add up to 100. How we rank
#5EgyptDay boat or liveaboard●●○Medium confidence: 4 sites on Divetip so far - Strength: 3 of 4 sites are in season in September
- Strength: Calm seas on almost every day
- Strength: Water 27–28°C in September
- Trade-off: Mantas: possible in September, not reliable
JFMAMJJASOND
Best March to NovemberWhy this match: 31 + 9 + 19 + 13 = 72
Season31 / 38
3 of 4 sites are in season in September; calm on almost every day.
Interests9 / 31
Mantas: possible in September.
Your level19 / 19
No level picked, so all 4 sites count.
Weather13 / 13
Rain on few days; no real storm risk.
Points are scaled so the factors you set add up to 100. How we rank
Book your trip
Partner links: we may earn a commission if you book, at no extra cost to you. Partners never change the ranking.
Always check local conditions with your dive centre. Rankings are never paid for. Every month also has its own page: where to dive in September.
