Weather on September 21 in Hanoi

Historical weather data for September 21 in Hanoi, Vietnam

Avg High32°C (89°F)
Avg Low24°C (76°F)
Warmest202331°C
Coldest198726°C

Based on 48 years of data from HA DONG

About This Date

September 21st in Hanoi, Vietnam typically brings warm fall weather, with average highs around 32°C and lows near 24°C. Over 48 years of records, the warmest September 21st was in 2023 (31°C average), while the coldest was 1987 (26°C) — a 9°F range across recorded history. Rain or other precipitation has occurred on about 25% of September 21st dates historically, with the wettest September 21st recording 12.19" of rain.

Planning for September 21st in Hanoi? Stay hydrated and seek shade during peak afternoon hours.

Year by Year History

YearHighLowPrecip
202533°C (91°F)26°C (78°F)--
2024--25°C (77°F)4.5"
202336°C (96°F)27°C (81°F)0"
2022--26°C (78°F)0.18"
2021--25°C (77°F)--
2020--25°C (77°F)0"
2019--24°C (76°F)0"
201834°C (93°F)24°C (76°F)0"
2017--27°C (80°F)0"
2016--25°C (77°F)0"
2015--24°C (76°F)0.89"
201429°C (85°F)23°C (74°F)12.19"
201334°C (94°F)24°C (76°F)0"
201232°C (90°F)24°C (76°F)0.08"
201127°C (81°F)--0.05"
201034°C (93°F)--0"
200930°C (86°F)--3.05"
200831°C (88°F)--3.2"
200733°C (91°F)--0"
200631°C (87°F)--0.74"
200533°C (92°F)--0"
200433°C (91°F)25°C (77°F)0"
200333°C (92°F)--0"
200232°C (89°F)--0"
200134°C (93°F)--0.08"
200031°C (88°F)23°C (74°F)0"
199929°C (84°F)----
199833°C (91°F)--0"
1997--17°C (63°F)0"
199627°C (81°F)--0.41"
1995--24°C (75°F)0"
199433°C (91°F)26°C (79°F)0"
199333°C (91°F)--0"
1992--24°C (75°F)--
199131°C (87°F)25°C (77°F)0.3"
199031°C (88°F)24°C (76°F)--
198933°C (91°F)----
198832°C (89°F)--0"
198728°C (82°F)24°C (75°F)--
1986--23°C (73°F)0"
198532°C (90°F)--0"
1984--24°C (76°F)0"
198333°C (91°F)--0"
1982--23°C (73°F)--
197826°C (79°F)----
197731°C (88°F)----
197630°C (86°F)----
1975--22°C (72°F)--

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