Mercury IslandMercury Island at a Glance
When to Go
Best Time to Visit Mercury Island
Access is weather-dependent; the cool season offers more comfortable sea conditions though landings remain rare and restricted.
Cool season
May-September · 16-24°C
Generally cooler and more comfortable for sea travel along the Namibian coast.
Warm season
October-April · 20-30°C
Warmer waters but sometimes hazier conditions; boat operators may still work depending on comfort levels.
Weather & Climate near Mercury Island
Climate
Temperate climate with consistently warm temperatures year-round. Temperatures range from 10°C to 25°C. Very dry conditions with minimal rainfall with a pronounced dry season.
Air Quality:
AQI 53
Moderate
Best Time to Visit
MarchAprilJanuary
Temperature & Rainfall
Temperature Range
42°
Warmest Month
5°
Coldest Month
Monthly Conditions
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | Ideal | 15° - 25° | 20° | 2 mm | partly cloudy | 65% | 3.9 m/s | 3.2 extreme | 13.4h |
| February | Ideal | 15° - 24° | 20° | 1 mm | partly cloudy | 63% | 3.8 m/s | 2.9 extreme | 12.8h |
| March | Ideal | 14° - 24° | 19° | 3 mm | some cloud | 57% | 3.5 m/s | 2.3 extreme | 12.1h |
| April | Ideal | 13° - 24° | 18° | 3 mm | some cloud | 52% | 3.7 m/s | 1.7 very high | 11.4h |
| May | Excellent | 12° - 22° | 17° | 2 mm | some cloud | 48% | 3.9 m/s | 1.2 high | 10.8h |
| June | Excellent | 11° - 21° | 16° | 3 mm | mostly sunny | 48% | 4.0 m/s | 0.9 moderate | 10.4h |
| July | Excellent | 10° - 21° | 15° | 2 mm | mostly sunny | 46% | 4.2 m/s | 0.9 moderate | 10.6h |
| August | Excellent | 10° - 20° | 15° | 2 mm | some cloud | 52% | 4.4 m/s | 1.3 high | 11.1h |
| September | Excellent | 10° - 20° | 15° | 1 mm | some cloud | 50% | 5.1 m/s | 1.7 very high | 11.8h |
| October | Excellent | 11° - 21° | 16° | 1 mm | partly cloudy | 53% | 4.3 m/s | 2.2 extreme | 12.6h |
| November | Excellent | 13° - 23° | 18° | 0 mm | partly cloudy | 57% | 4.4 m/s | 2.8 extreme | 13.2h |
| December | Ideal | 14° - 24° | 19° | 1 mm | partly cloudy | 63% | 4.0 m/s | 3.1 extreme | 13.6h |
Getting There & Around
How to Get to Mercury Island
There are no regular transport services. Any approach would be by private charter or research vessel from Namibian ports such as Lüderitz or Walvis Bay. Landings are infrequent and often restricted; coordination with Namibian authorities is required.
Tips for Visiting Mercury Island
- If planning to approach the island, coordinate with Namibian authorities - there is no tourist infrastructure and landings are rare.
- Bring supplies and expect minimal shelter; the island is arid and exposed.
- Observe local wildlife from the boat rather than attempting to land - seals and seabirds are sensitive to disturbance.