Memba 1
Dive site · United Republic of Tanzania
Advanced divers and up
Is it worth the trip?
80Good out of 100 for your dates
3 days tie for best
Wed 4 · 80 out of 100
- Sea
- 0.6 m
- Wind
- 5 kn
- Gusts
- 7kn
- Air
- 27°C
Thu 5 · 79 out of 100
- Sea
- 0.7 m
- Wind
- 7 kn
- Gusts
- 9kn
- Air
- 28°C
Fri 6 · 79 out of 100
- Sea
- 0.7 m
- Wind
- 8 kn
- Gusts
- 11kn
- Air
- 28°C
Sat 7 · 79 out of 100
- Sea
- 0.7 m
- Wind
- 7 kn
- Gusts
- 10kn
- Air
- 28°C
Sun 8 · 79 out of 100
- Sea
- 0.7 m
- Wind
- 4 kn
- Gusts
- 8kn
- Air
- 28°C
Mon 9 · 80 out of 100
- Sea
- 0.6 m
- Wind
- 5 kn
- Gusts
- 7kn
- Air
- 28°C
Tue 10 · 80 out of 100
- Sea
- 0.6 m
- Wind
- 5 kn
- Gusts
- 8kn
- Air
- 28°C
Tap a day for sea, wind and water. Full forecast
Forecast: next 9 days
Full forecast- Tue 380, good
- Wed 480, good
- Thu 579, good
- Fri 679, good
- Sat 779, good
- Sun 879, good
- Mon 980, good
- Tue 1080, good
- Wed 1180, good
The site in five facts
- Down to 25 mits deepest
- From a boathow you get in
- Advancedand up
- Water 28 °C3 mm wetsuit
- Faces Eswell from there reaches it
Full forecast
every day, every number
The score doesn't know currents, the visibility on the day or your certification.
Suits Advanced divers and up, as a dive guide states it. Scored for Advanced divers.
| Day | Score | Sea | Wind | Gusts | Air |
|---|---|---|---|---|---|
| Tue 3Nov | 80, good | 0.6 m | 7 kn | 10kn | 28°C |
| Wed 4Nov | 80, good | 0.6 m | 5 kn | 7kn | 27°C |
| Thu 5Nov | 79, good | 0.7 m | 7 kn | 9kn | 28°C |
| Fri 6Nov | 79, good | 0.7 m | 8 kn | 11kn | 28°C |
| Sat 7Nov | 79, good | 0.7 m | 7 kn | 10kn | 28°C |
| Sun 8Nov | 79, good | 0.7 m | 4 kn | 8kn | 28°C |
| Mon 9Nov | 80, good | 0.6 m | 5 kn | 7kn | 28°C |
| Tue 10Nov | 80, good | 0.6 m | 5 kn | 8kn | 28°C |
| Wed 11Nov | 80, good | 0.5 m | 7 kn | 10kn | 28°C |
Sea is the waves near the site, in metres; wind and gusts in knots. "Boats in": gusts that keep dive boats in. More
Tide
- Tue 3 NovLow 04:26 −0.5 mHigh 10:53 +0.7 mLow 17:27 −0.8 m
- Wed 4 NovHigh 00:02 +0.8 mLow 06:14 −0.7 mHigh 12:29 +0.8 mLow 18:43 −0.9 m
- Thu 5 NovHigh 01:10 +1.1 mLow 07:26 −0.9 mHigh 13:34 +0.9 mLow 19:37 −1.1 m
Local clock times; heights about mean sea level. On open coasts the times are usually within a quarter of an hour; in bays, estuaries and on the Gulf of Mexico they can be an hour or more out. Slack water, the safest time to dive where there is current, is about half an hour either side of each high and low. Tide: EOT20 global ocean tide model, Hart-Davis et al. 2021, DGFI-TUM (doi:10.17882/79489), CC BY 4.0. Times and heights computed by us. A model, not a tide table: check a local table before you go.
Forecast updated . It refreshes every three hours. Forecast data: ECMWF, DWD, Météo-France and NOAA, served by Open-Meteo.com (CC BY 4.0). Changed by us. Generated using E.U. Copernicus Marine Service Information.
Best time to go
No month stands out
Good diving days in a typical week, each month, for Advanced divers, from 2016 on (ERA5 history scored the same way).
- Jan7of 7: a trip from Sat 2 Jan
- Feb7of 7: a trip from Sat 6 Feb
- Mar7of 7: a trip from Sat 6 Mar
- Apr7of 7: a trip from Sat 3 Apr
- May7of 7: a trip from Sat 1 May
- Jun6of 7: a trip from Sat 5 Jun
- Jul6of 7: a trip from Sat 3 Jul
- Aug7of 7: a trip from Sat 7 Aug
- Sep7of 7: a trip from Sat 4 Sept
- Oct7of 7: a trip from Sat 2 Oct
- Nov7of 7: a trip from Wed 4 Nov
- Dec7of 7: a trip from Sat 5 Dec
Tap a month to see this spot for a trip then.
Typical, not a forecast: the sea and the mean wind of each day, with no gusts or rain in the history.
Map
the site and its town
Memba 1 on Google Maps · Directions
Each place wears its best day on these dates: green good, amber fair, pale red poor, as the key says.
The map needs JavaScript. Every place on it is listed on this page, and each place's page links to Google Maps.
One finger scrolls the page; two fingers move the map. Pins are our own positions. Map OpenFreeMap, © OpenMapTiles, data © OpenStreetMap contributors.
More diving near here
2 places
- Little Wall 0.1 km away
- Mnemba 2 1.4 km away
About
the place in full, sources, credits
About Memba 1
A reef and wall dive. It goes down to 25 m. You get in from a boat. It suits Advanced divers and up, as a dive guide states it. The coast faces E: swell from the E reaches it, and wind from the W blows out to sea. 1 dive centre or shop within 10 km, the nearest 4.8 km away. The sea is about 26°C in July, its coldest month (3 mm wetsuit), and 29°C in February, its warmest (rash vest or 1 to 2 mm). The town to stay in is Matemwe. Within 5 km we also list 2 dive sites.
- What it is Reef and wall.
- How deep Down to 25 m.
- Getting in From a boat.
- Who it suits Suits Advanced divers and up, as a dive guide states it.
- Dive centres 1 dive centre or shop within 10 km, the nearest 4.8 km away.
Water about 28°C: 3 mm wetsuit. Typical sea temperature for the time of year, not a forecast.
Visibility about 20 m. Typical for the time of year, estimated from ten years of NASA satellite water clarity, not a forecast. Clearest in Feb, Mar, Apr and Dec (about 20 m).
The score is the conditions only: the journey, the price and the partners never change it (how we score, how we earn).
Rough cost (estimate): about US$1,050–US$2,110 each
about US$1,050–US$2,110 each · 6 nights, 2 sharing: flights, hire car, stay, food.
Our estimate from typical public prices, not a quote: check the real prices before you book (where they come from). Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 2 November 2026.
How we worked it out
| What | How we worked it out | Each |
|---|---|---|
| Flights | return ORD to ZNZ, estimated from distance and season, changing at MAD, full-service airlines, with a hold bag | about US$845–US$1,760 |
| Hire car | 6 days, shared | about US$40–US$67 |
| Stay | 6 nights, a mid-range double, shared | about US$81–US$127 |
| Food | 7 days eating out | about US$87–US$161 |
| Total | about US$1,050–US$2,110 |
Guided dives are not priced yet: we have no sourced price, so it is not in it. Prices from public sources, checked in 2026.
Where to stay: Matemwe
Ad Links marked Ad may pay us if you book. You pay the same, and they never change a score. How we earn
about 15 min by car · 30 places to stay
about US$27/nightcountry average
About Matemwe its beds, food and every spot near it
About US$27 a night is our estimate of the country's average 2-star double room that month: not each town's price, and not a quote. Drives are estimates. Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 2 November 2026.
Getting there: about 26h 10m
About 26h 10m door to door from Chicago
Fly ORD → ZNZ, changing at Adolfo Suárez Madrid–Barajas Airport (MAD), then 1h 10m by road
Flights ORD → ZNZ on your dates · AviasalesAdeSIM for your phone · Search on AiraloAd
An estimate, one way; the journey never changes the score.
In the water
Dives and courses in Matemwe · GetYourGuideDive gear hire in Matemwe · GetYourGuide
Dive centres nearby
TGI diving 4.8 km
SSI Freediving 15 km
Scuba Caribe 15 km
One Ocean 16 km
Awesome Ocean Diving 16 km
The nearest named dive centres and shops within 25 km, in a straight line; training agencies where the map states them. Listings, not a recommendation. Dive centres: © OpenStreetMap contributors (ODbL). Credits
What you might see
Too few records at this site itself, so these are the animals divers and surveys have recorded at other sites within 25 km in the last 15 years. A record says someone saw it there, not that you will.
Threespot dascyllus Dascyllus trimaculatus
Seen in 5 records.
Amphiprion akallopisosDamselfishes
Seen in 4 records.
Chinese trumpetfish Aulostomus chinensis
Seen in 3 records.
Giant moray Gymnothorax javanicus
Seen in 3 records.
Radianthus magnifica
Seen in 3 records.
Lagoon triggerfish Rhinecanthus aculeatus
Seen in 3 records.
Records: OBIS (Ocean Biodiversity Information System, IOC-UNESCO) and GBIF.org (1 November 2026, doi:10.15468/dl.jeesns), from the datasets named here, CC0 and CC BY records only. Names: WoRMS and GBIF; common names from the Catalogue of Life, the GBIF Backbone and Wikidata. Largest datasets here: Programme CROMIS: carnet de plongée en ligne de la FFESSM-Observations d'espèces subaquatiques collectées par les utilisateurs de CROMIS; iNaturalist Research-grade Observations; Spatial and temporal distribution of small pelagic fishes in the territorial waters of Tanzania.; CAS Invertebrate Zoology (IZ); Happywhale - Humpback whale in Indian Ocean. Credits
This week's visibility and the current no free forecast gives. Ask a dive centre before you book.