Yaren weather in December

There's essentially no independent travel-forum content specific to Yaren or Nauru's weather - one reviewer summed up the destination bluntly: 'it's not a tourist destination, that's for sure,' with visits centered on WWII-era bunkers, a small museum, and the practical reality that flights require committing to a fixed 2, 5, or 7-day stay regardless of preference. That near-total absence of forum chatter is itself informative about how few travelers make it here. Real climate data fills the gap: Nauru sits almost exactly on the equator, so January runs uniformly warm and humid with steady trade winds and real rain spread across roughly half the month's days - essentially the same conditions this tiny island sees year-round, with little seasonal variation to speak of.

Forum posters describe Nauru as having essentially one continuous season of summer, with temperatures commonly cited around 32C year-round - a real feature of sitting almost directly on the equator, where seasonal variation is minimal compared to almost anywhere else. Posters don't report a meaningfully different climate in August versus any other month, consistent with the destination's equatorial position. Given how few detailed trip reports exist for Nauru, the practical takeaway from what discussion does exist is straightforward: expect hot, humid, tropical conditions in Yaren regardless of when a visit is scheduled, with no real seasonal window that stands out as meaningfully better or worse than another.