In September, Jelgava typically sees daytime highs of 16.6°C and overnight lows around 7.6°C. Compared to the annual average high of 10.0°C, September runs +6.6°C.
September in Jelgava averages a daytime high of 16.6°C and an overnight low of 7.6°C.
September runs +6.6°C compared to Jelgava's annual average high of 10.0°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 16.6°C and cooler evenings around 7.6°C.