August in Narva averages a daily high of 21.5°C with nights around 12.3°C. Expect roughly 13.7 wet days totalling 83.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Narva is June–August.
Based on NARVA, EN (4.6km), 1995–2024. 30 years of August data.