The verdict

Best places to dive with sardines

Sardinops sagax

The most reliable place to dive with sardines is Catalina Island, from All year.

Illustration of a sardine
How many of the top 9 destinations are at their peak for sardines each month
JanFebMarAprMayJunJulAugSepOctNovDec
January: 3 of 9 at peakFebruary: 2 of 9 at peakMarch: 3 of 9 at peakApril: 5 of 9 at peakMay: 2 of 9 at peakJune: 3 of 9 at peakJuly: 2 of 9 at peakAugust: 5 of 9 at peakSeptember: 6 of 9 at peakOctober: 5 of 9 at peakNovember: 2 of 9 at peakDecember: 3 of 9 at peak
Most sites at peak Some at peak

Based on 4,480 OBIS records of sardine (Sardinops sagax) within 60 km of 9 dive destinations.

Top destinations to dive with sardines

9 on record

Ranked on how reliably they turn up, then on how long the record runs.

Destinations to dive with sardines, most reliable first
#DestinationCountry / areaSeasonReliabilityEvidenceDive type
1Catalina IslandUSAAll yearNear-guaranteed32 of 32 yearsShore, Day boat
2La Jolla / San DiegoUSAAll yearNear-guaranteed30 of 32 yearsShore, Day boat
3Channel IslandsUSAAug–OctNear-guaranteed27 of 32 yearsLiveaboard, Day boat
4MontereyUSAAug–OctNear-guaranteed26 of 32 yearsShore
5Guadalupe IslandMexico PacificMar–AprHit-or-miss0 of 19 yearsfew recordsCage
6Aliwal ShoalSouth AfricaJunHit-or-miss5 of 31 yearsfew recordsDay boat
7Poor KnightsNew ZealandSep–Oct, DecHit-or-miss4 of 31 yearsfew recordsDay boat
8Byron Bay / Julian RocksAustraliaApr, Aug–SepHit-or-miss1 of 32 yearsDay boat
9Sea of Cortez / La PazMexico PacificJan, AprHit-or-miss1 of 30 yearsfew recordsLiveaboard, Day boat

When to dive with sardines

Hover a month to isolate it
Peak and possible months for sardines at each destination
JanFebMarAprMayJunJulAugSepOctNovDec
Catalina IslandJan: Peak seasonFeb: Peak seasonMar: Peak seasonApr: Peak seasonMay: Peak seasonJun: Peak seasonJul: Peak seasonAug: Peak seasonSep: Peak seasonOct: Peak seasonNov: Peak seasonDec: Peak season
La Jolla / San DiegoJan: Peak seasonFeb: Peak seasonMar: Peak seasonApr: Peak seasonMay: Peak seasonJun: Peak seasonJul: Peak seasonAug: Peak seasonSep: Peak seasonOct: Peak seasonNov: Peak seasonDec: Peak season
Channel IslandsJan: Not commonFeb: Not commonMar: Not commonApr: Not commonMay: Not commonJun: PossibleJul: PossibleAug: Peak seasonSep: Peak seasonOct: Peak seasonNov: PossibleDec: Possible
MontereyJan: Not commonFeb: Not commonMar: Not commonApr: Not commonMay: Not commonJun: Not commonJul: PossibleAug: Peak seasonSep: Peak seasonOct: Peak seasonNov: Not commonDec: Not common
Guadalupe IslandJan: Not commonFeb: PossibleMar: Peak seasonApr: Peak seasonMay: PossibleJun: PossibleJul: PossibleAug: Not commonSep: Not commonOct: Not commonNov: Not commonDec: Not common
Aliwal ShoalJan: Not commonFeb: PossibleMar: PossibleApr: Not commonMay: PossibleJun: Peak seasonJul: Not commonAug: Not commonSep: Not commonOct: PossibleNov: Not commonDec: Not common
Poor KnightsJan: Not commonFeb: Not commonMar: PossibleApr: Not commonMay: Not commonJun: PossibleJul: PossibleAug: Not commonSep: Peak seasonOct: Peak seasonNov: Not commonDec: Peak season
Byron Bay / Julian RocksJan: Not commonFeb: PossibleMar: Not commonApr: Peak seasonMay: PossibleJun: Not commonJul: Not commonAug: Peak seasonSep: Peak seasonOct: Not commonNov: Not commonDec: Possible
Sea of Cortez / La PazJan: Peak seasonFeb: PossibleMar: PossibleApr: Peak seasonMay: PossibleJun: Not commonJul: Not commonAug: Not commonSep: Not commonOct: Not commonNov: Not commonDec: Not common
Peak season Possible Not common

Sardine month by month

January
The one peak month at Sea of Cortez / La Paz. Also good at Catalina Island and La Jolla / San Diego.
March
Season starts at Guadalupe Island. Also good at Catalina Island and La Jolla / San Diego.
April
The one peak month at Byron Bay / Julian Rocks. Also good at Guadalupe Island, Sea of Cortez / La Paz and 2 more.
June
The one peak month at Aliwal Shoal. Also good at Catalina Island and La Jolla / San Diego.
August
Season starts at Channel Islands. Also good at Monterey, Byron Bay / Julian Rocks and 2 more.
September
Season starts at Poor Knights. Also good at Channel Islands, Monterey and 3 more.
October
Last peak month at Channel Islands. Also good at Monterey, Poor Knights and 2 more.
December
The one peak month at Poor Knights. Also good at Catalina Island and La Jolla / San Diego.

What to expect in the water

Water temperature and the suit to pack at the top sites, in the months sardines are there.

Water temperature and wetsuit at the top sites for sardines in season
DestinationSeasonWaterSuit
Catalina IslandAll year1521 °C7 mm semi-dry
La Jolla / San DiegoAll year1522 °C7 mm semi-dry
Channel IslandsAug–Oct1920 °C5 mm with hood and gloves
MontereyAug–Oct1516 °C7 mm semi-dry
Guadalupe IslandMar–Apr17 °C7 mm semi-dry

What else you'll see with sardines

Animals at their peak in the same places and months.

Diving with sardines: common questions

Where is the best place to dive with sardines?
The most reliable place to dive with sardines is Catalina Island, from All year.
When is the best time to dive with sardines?
September, when 6 of the 9 best-evidenced destinations are at their peak. It varies by place: Catalina Island peaks All year; La Jolla / San Diego peaks All year; Channel Islands peaks August to October.
What wetsuit do you need to dive with sardines?
At Catalina Island from All year, the water is 15 °C to 21 °C, so bring a 7 mm semi-dry.
How many places can you dive with sardines?
besttimetodive.com has sardines on record at 9 of the destinations it scores. Not an exhaustive list — these are the sites we hold verified data for.