This is more likely El Nino-related (the extremely strong El Nino currently in process is likely to make the East & South much warmer than usual), though of course worldwide temperature increases will compound to make the temperature higher than it might have been without climate change. My understanding is that it's still fairly unclear how climate change might be affecting equatorial oscillations like El Nino (as opposed to the Arctic/North Atlantic oscillations where there are some pretty specific mechanisms of action hypothesized).