Discovery Bay

What is the climate like in Discovery Bay?

The best time to visit Discovery Bay is typically April – October, with trip comfort peaking in July (9.5/10). Discovery Bay is warmest in July, when daily highs average 90°F (32°C), and coolest in December, when lows fall to about 43°F (6°C). The wettest month is typically January and the driest is July; the year sees roughly 20 in (498 mm) of precipitation.

• Best time to visitApril – October — comfort peaks in July (9.5/10)
• Warmest monthJuly — average high 90°F (32°C)
• Coolest monthDecember — average low 43°F (6°C)
• Wettest monthJanuary (4.3 in (110 mm))
• Driest monthJuly (0.0 in (0 mm))
• Annual precipitation20 in (498 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromTracy Pumping Plt, 13 km away (1955-2026)