Mexico Pacific · Roca Partida
Best Time to Dive in Roca Partida, Socorro / Revillagigedo
19.00°N 112.07°W
Closed June to October. Go November to May for oceanic manta. The calmest water is December, outside their window.
- Best time
- Nov–May
- Water
- 24–28 °C
- Visibility
- 25–35 m
- Dived from
- liveaboard
- Tidal range
- 0.7–1.6 m
- Species logged
- 8
Where it is
| Site | Best months |
|---|---|
| Roca Partida | Nov–May |
| Socorro / Revillagigedo | Nov–May |
444 km across · coastline from Natural Earth 10m
Diving in Roca Partida, Socorro / Revillagigedo — monthly breakdown
A year of scuba diving conditions at a glance. Hover a month to isolate it.
| January | February | March | April | May | June | July | August | September | October | November | December | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Conditions | Poor | Moderate | Poor | Good | Moderate | Poor | Poor | Poor | Poor | Poor | Poor | Excellent |
| Water temp (°C) | 25 | 24 | 24 | 24 | 25 | 25 | 27 | 28 | 28 | 28 | 27 | 26 |
| Visibility (m) | 25–35 | 25–35 | 25–35 | 25–35 | 25–35 | 25–35 | 25–35 | 25–35 | 25–35 | 25–35 | 25–35 | 25–35 |
| Marine life | Steady | Steady | Steady | Steady | Steady | Closed | Closed | Closed | Closed | Closed | Steady | Steady |
| Best time | Peak | Peak | Peak | Peak | Peak | Peak | Peak |
Excellent Good Moderate PoorPeak season Nov–May
Long-term averages, 2016–2025. Visibility is estimated from satellite chlorophyll-a. Water temperature is the surface mean; it is cooler at depth.
The Roca Partida, Socorro / Revillagigedo diving season
February to May · Shoulder season
4 monthsJFMAMJJASOND
- Water temperature
- 24–25 °C
- Visibility
- 25–35 m
- Rain
- 0 days a month
Diving conditionsIt rains less.
Marine lifeOceanic manta (hit-or-miss), Scalloped hammerhead (hit-or-miss) peak at Roca Partida, Socorro / Revillagigedo in these months.
June to January · Off season
8 monthsJFMAMJJASOND
- Water temperature
- 25–28 °C
- Visibility
- 25–35 m
- Rain
- 4 days a month
Diving conditionsIt rains more.
Marine lifeOceanic manta (hit-or-miss), Scalloped hammerhead (hit-or-miss) peak at Roca Partida, Socorro / Revillagigedo in these months.
- Spring tides run 1.6 m against 0.7 m on neaps, so currents build around the full and new moon.
- Water temperature is satellite sea-surface temperature, so expect it cooler below the thermocline.
- Visibility is estimated from satellite chlorophyll-a.
Socorro / Revillagigedo water temperature and weather
175 underwater observation records · 21 surveyed years of ocean data · 10 years of sea temperature
Water & weather
Roca Partida, Socorro / Revillagigedo water temperature by month
The dashed line is the monthly average. Eight days in ten fall inside the band.
10th to 90th percentile rangemonthly mean
4
rough days a month
Seas top 2.5 m on 13% of days. Enough to cancel a liveaboard crossing
1
blowy days a month
Gusts over 40 km/h, about where a day boat stays in port
3
wet days a month
1 of them bring heavy rain
| Month | Swell | Gusts over 40 km/h | Wet days | Heavy rain | Air | Daylight |
|---|---|---|---|---|---|---|
| January | 2.9 m | 0% | 1 | 0 | 23 °C | 11.0 h |
| February | 2.7 m | 0% | 1 | 0 | 23 °C | 11.4 h |
| March | 2.8 m | 2% | 0 | 0 | 23 °C | 11.9 h |
| April | 2.5 m | 0% | 0 | 0 | 23 °C | 12.4 h |
| May | 2.3 m | 0% | 0 | 0 | 23 °C | 12.9 h |
| June | 2.3 m | 3% | 3 | 1 | 24 °C | 13.1 h |
| July | 2.4 m | 5% | 4 | 1 | 27 °C | 13.0 h |
| August | 2.7 m | 8% | 8 | 3 | 28 °C | 12.6 h |
| September | 2.7 m | 8% | 9 | 3 | 28 °C | 12.1 h |
| October | 2.7 m | 4% | 4 | 1 | 27 °C | 11.6 h |
| November | 2.5 m | 1% | 2 | 0 | 26 °C | 11.1 h |
| December | 2.8 m | 1% | 3 | 0 | 25 °C | 10.9 h |
Swell is the rough end of the month: nine days in ten come in under it. Sea temperature covers 10 years, waves 4.
Pick your week
48 weeks from the daily record. Darker is better, against this site's own year. Pick a month for the detail.
| Week 1 | January week 1: Poor | February week 1: Moderate | March week 1: Poor | April week 1: Moderate | May week 1: Moderate | June week 1: Poor | July week 1: Poor | August week 1: Poor | September week 1: Poor | October week 1: Poor | November week 1: Moderate | December week 1: Excellent |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Week 2 | January week 2: Poor | February week 2: Moderate | March week 2: Poor | April week 2: Good | May week 2: Moderate | June week 2: Poor | July week 2: Poor | August week 2: Poor | September week 2: Poor | October week 2: Poor | November week 2: Poor | December week 2: Excellent |
| Week 3 | January week 3: Moderate | February week 3: Poor | March week 3: Poor | April week 3: Good | May week 3: Moderate | June week 3: Poor | July week 3: Poor | August week 3: Poor | September week 3: Poor | October week 3: Poor | November week 3: Poor | December week 3: Excellent |
| Week 4 | January week 4: Moderate | February week 4: Moderate | March week 4: Poor | April week 4: Good | May week 4: Good | June week 4: Poor | July week 4: Poor | August week 4: Poor | September week 4: Poor | October week 4: Poor | November week 4: Poor | December week 4: Good |
Excellent Good Moderate PoorBest week to go: third of December
January, week by week
| Week | Conditions | Water | Swell | Wind | Rain chance |
|---|---|---|---|---|---|
| Week 1 | Poor | 26 °C | 3.4 m | 24 km/h | 4% |
| Week 2 | Poor | 25 °C | 3.1 m | 24 km/h | 2% |
| Week 3 | Moderate | 25 °C | 2.7 m | 25 km/h | 4% |
| Week 4 | Moderate | 25 °C | 2.4 m | 25 km/h | 6% |
February, week by week
| Week | Conditions | Water | Swell | Wind | Rain chance |
|---|---|---|---|---|---|
| Week 1 | Moderate | 25 °C | 2.6 m | 25 km/h | 5% |
| Week 2 | Moderate | 24 °C | 2.7 m | 25 km/h | 4% |
| Week 3 | Poor | 24 °C | 2.8 m | 25 km/h | 4% |
| Week 4 | Moderate | 24 °C | 2.8 m | 25 km/h | 2% |
March, week by week
| Week | Conditions | Water | Swell | Wind | Rain chance |
|---|---|---|---|---|---|
| Week 1 | Poor | 24 °C | 2.8 m | 25 km/h | 0% |
| Week 2 | Poor | 24 °C | 2.7 m | 25 km/h | 0% |
| Week 3 | Poor | 24 °C | 2.6 m | 25 km/h | 0% |
| Week 4 | Poor | 24 °C | 2.7 m | 25 km/h | 0% |
April, week by week
| Week | Conditions | Water | Swell | Wind | Rain chance |
|---|---|---|---|---|---|
| Week 1 | Moderate | 24 °C | 2.6 m | 24 km/h | 0% |
| Week 2 | Good | 24 °C | 2.5 m | 23 km/h | 0% |
| Week 3 | Good | 24 °C | 2.4 m | 24 km/h | 0% |
| Week 4 | Good | 24 °C | 2.4 m | 24 km/h | 0% |
May, week by week
| Week | Conditions | Water | Swell | Wind | Rain chance |
|---|---|---|---|---|---|
| Week 1 | Moderate | 25 °C | 2.4 m | 25 km/h | 0% |
| Week 2 | Moderate | 25 °C | 2.4 m | 25 km/h | 0% |
| Week 3 | Moderate | 25 °C | 2.3 m | 25 km/h | 0% |
| Week 4 | Good | 25 °C | 2.2 m | 25 km/h | 0% |
June, week by week
| Week | Conditions | Water | Swell | Wind | Rain chance |
|---|---|---|---|---|---|
| Week 1 | Poor | 25 °C | 2.2 m | 25 km/h | 2% |
| Week 2 | Poor | 25 °C | 2.2 m | 24 km/h | 7% |
| Week 3 | Poor | 25 °C | 2.3 m | 22 km/h | 9% |
| Week 4 | Poor | 25 °C | 2.9 m | 21 km/h | 12% |
July, week by week
| Week | Conditions | Water | Swell | Wind | Rain chance |
|---|---|---|---|---|---|
| Week 1 | Poor | 26 °C | 2.8 m | 21 km/h | 16% |
| Week 2 | Poor | 27 °C | 2.4 m | 19 km/h | 16% |
| Week 3 | Poor | 27 °C | 2.0 m | 19 km/h | 15% |
| Week 4 | Poor | 28 °C | 2.4 m | 18 km/h | 15% |
August, week by week
| Week | Conditions | Water | Swell | Wind | Rain chance |
|---|---|---|---|---|---|
| Week 1 | Poor | 28 °C | 3.1 m | 19 km/h | 19% |
| Week 2 | Poor | 28 °C | 2.7 m | 19 km/h | 23% |
| Week 3 | Poor | 28 °C | 2.5 m | 20 km/h | 25% |
| Week 4 | Poor | 28 °C | 2.6 m | 21 km/h | 30% |
September, week by week
| Week | Conditions | Water | Swell | Wind | Rain chance |
|---|---|---|---|---|---|
| Week 1 | Poor | 28 °C | 3.2 m | 22 km/h | 33% |
| Week 2 | Poor | 28 °C | 2.9 m | 22 km/h | 33% |
| Week 3 | Poor | 28 °C | 2.5 m | 22 km/h | 31% |
| Week 4 | Poor | 28 °C | 2.6 m | 22 km/h | 23% |
October, week by week
| Week | Conditions | Water | Swell | Wind | Rain chance |
|---|---|---|---|---|---|
| Week 1 | Poor | 28 °C | 2.9 m | 22 km/h | 19% |
| Week 2 | Poor | 28 °C | 3.0 m | 23 km/h | 20% |
| Week 3 | Poor | 28 °C | 2.7 m | 23 km/h | 12% |
| Week 4 | Poor | 28 °C | 2.6 m | 22 km/h | 7% |
November, week by week
| Week | Conditions | Water | Swell | Wind | Rain chance |
|---|---|---|---|---|---|
| Week 1 | Moderate | 27 °C | 2.5 m | 22 km/h | 6% |
| Week 2 | Poor | 27 °C | 2.6 m | 23 km/h | 8% |
| Week 3 | Poor | 27 °C | 2.7 m | 23 km/h | 8% |
| Week 4 | Poor | 27 °C | 2.4 m | 24 km/h | 8% |
December, week by week
| Week | Conditions | Water | Swell | Wind | Rain chance |
|---|---|---|---|---|---|
| Week 1 | Excellent | 26 °C | 2.4 m | 25 km/h | 12% |
| Week 2 | Excellent | 26 °C | 2.2 m | 24 km/h | 12% |
| Week 3 | Excellent | 26 °C | 2.4 m | 24 km/h | 8% |
| Week 4 | Good | 26 °C | 3.5 m | 24 km/h | 7% |
10 years of daily records, averaged into weeks.
Gear & storms
What to wear
Off the coldest water of each month, not the average — that is what the suit has to cope with.
| January | February | March | April | May | June | July | August | September | October | November | December | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Suit | January: 3 mm | February: 5 mm | March: 5 mm | April: 5 mm | May: 5 mm | June: 5 mm | July: 3 mm | August: skin | September: skin | October: 3 mm | November: 3 mm | December: 3 mm |
- Oct–Jan3 mm full suit
- Feb–Jun5 mm full suit
- Jul3 mm full suit
- Aug–Sepskin or 3 mm shorty
Swell through the year
The rough end of each month — nine days in ten come in under it.
Amber is over 2.5 m.
Tides
Tropical storms
24 of the last 30 Septembers saw a tropical storm pass within 250 km. Anything has been recorded May–Nov.
Share of the last 30 years with a storm that month.
- NOAASea surface temperature, from OISST and MUR
- ERA5Wind, waves, rain and air temperature, via Open-Meteo
- OBISMarine species records within 60 km
- IBTrACSTropical cyclone tracks, 1996 to 2025
Roca Partida, Socorro / Revillagigedo marine life — what you'll see diving
Only 175 records have been logged within 60 km. A thin record is not an empty reef.
| Species | When | Observed window | Reliability | Evidence | Records |
|---|---|---|---|---|---|
| Humpback whale | Jan | Likely | 30 | ||
| Silky shark | Apr, Jun | Hit-or-miss | 53 | ||
| Yellowfin tuna | Mar, May–Jun | Hit-or-miss | 9 | ||
| Silvertip shark | Dec–Feb | Likely | 8 | ||
| Oceanic manta | Jan, Mar | Hit-or-miss | 9 | ||
| Bottlenose dolphin | Jun, Aug, Oct | Hit-or-miss | 9 | ||
| Whitetip reef shark | Jan, Jun, Nov | Likely | 26 | ||
| Scalloped hammerhead | Jan, May | Hit-or-miss | 12 |
Peak Present No survey data
- Observed window
- Months with records. Peak is where most of them fall.
- Reliability
- Near-guaranteed in 60% of surveyed years or more
- Likely 30% to 60%
- Hit-or-miss under 30%
- Evidence
- Years it was seen, out of the years anyone surveyed.
- Records
- OBIS sightings within 60 km.
These are sightings people logged, not a full survey of the reef. A species missing from a month may just mean nobody recorded one.
Diving Roca Partida, Socorro / Revillagigedo — common questions
- When is the best time to dive Roca Partida, Socorro / Revillagigedo?
- Closed June to October. Go November to May for oceanic manta. The calmest water is December, outside their window.
- When is the diving season in Roca Partida, Socorro / Revillagigedo?
- Conditions are good December, but most divers come November to May for the marine life.
- Is the diving in Roca Partida, Socorro / Revillagigedo good for beginners?
- Not really. It is for experienced divers, so it is not a place to learn or to make your first dives after certification.
- How warm is the water in Roca Partida, Socorro / Revillagigedo?
- Between 24 and 28 °C at the surface across the year, coldest in March and warmest in August. It runs cooler below the thermocline.
- What wetsuit do I need in Roca Partida, Socorro / Revillagigedo?
- A 5 mm full suit covers the coldest water of the year. In the warmest months a skin or 3 mm shorty is enough.
- What is the visibility like in Roca Partida, Socorro / Revillagigedo?
- Roughly 25 to 35 m depending on the month. That is estimated from satellite chlorophyll-a rather than measured in the water.
- What will I see diving Roca Partida, Socorro / Revillagigedo?
- The most consistently recorded species are Humpback whale (likely), Silky shark (hit-or-miss) and Yellowfin tuna (hit-or-miss), from 175 records within 60 km.
- Does Roca Partida, Socorro / Revillagigedo get tropical storms?
- Yes. Over 30 years of records a storm passed within 250 km in May–Nov, most often in September at 24 of 30 years.
- Is there current in Roca Partida, Socorro / Revillagigedo?
- The tide rises and falls 1.6 m around the full and new moon, against 0.7 m in between. How much of that becomes current depends on the shape of the channel.
- When should I avoid Roca Partida, Socorro / Revillagigedo?
- The site is closed Jun–Oct. January, March, June–November are the weakest months for conditions.
- How do you dive Roca Partida, Socorro / Revillagigedo?
- Mostly from liveaboards. Trips run through the season, Dec.