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Q.Nara sits in a basin — is it really hotter in summer and colder in winter than you'd expect?

Published 2026-06-17

Answer

Yes. In August, Nara City's average daytime high reaches 33.4°C — almost the same as coastal Osaka (33.7°C). Yet in January the morning low averages just 0.8°C, more than 2°C colder than Osaka. As an inland basin far from the sea, Nara is "as hot as Osaka by day in summer, but sharply colder on winter mornings" (JMA climate normals, 1991–2020).

Nara's year, in numbers

At the Nara Local Meteorological Office, the annual mean is 15.7°C (1991–2020 normals). The gap between the warmest month (August, 27.8°C mean) and the coldest (January, 4.5°C mean) is 23.3°C. The all-time high is 39.3°C (8 Aug 1994) and the low is −7.8°C (16 Feb 1977) — a span of more than 47°C. Placed next to seaside Osaka, Nara's inland character stands out.

15.7°CNara's annual mean temperature (normal)

23.3°Cgap between the warmest and coldest months

47.1°Cspan between record high and low

MeasureNaraOsaka (coastal)
Annual mean15.7°C17.1°C
Aug. daily high (avg)33.4°C33.7°C
Jan. daily low (avg)0.8°C3.0°C

Summer: inland, yet as hot as Osaka

Nara lies about 30 km inland, and its weather station sits at roughly 104 m elevation — higher than Osaka's (about 23 m). Even so, the average August daily high is 33.4°C, nearly the same as coastal Osaka (33.7°C): a basin holds the daytime heat because air drains away slowly. The record reached 39.3°C on 8 August 1994. Contrary to any "cool old capital" image, midsummer afternoons get genuinely hot.

33.4°Caverage August daily high (normal)

39.3°Call-time record high (8 Aug 1994)

Winter: mornings run 2°C+ colder than Osaka

The contrast is clearest on winter mornings. January's average daily low is 0.8°C in Nara versus 3.0°C in Osaka — a gap of more than 2°C. On clear, calm nights, cold air pools at the basin floor and radiative cooling deepens; the record low hit −7.8°C on 16 February 1977. Days may feel mild, but mornings and evenings are cold, so winter visits call for clothing that assumes a chilly start.

0.8°Caverage January daily low (normal)

−7.8°Call-time record low (16 Feb 1977)

So pack for the day's temperature swing

A basin climate swings not just by season but within a single day. Using the normals, the daily high-to-low gap is about 9°C in August and about 8°C in January — morning, midday and evening can feel very different. For a day of sightseeing on foot, that means sun and heat precautions in summer and easy-to-layer clothing in winter. The more time you spend outdoors — Nara Park being the obvious example — the more this daily swing is worth planning for.

approx. 9°CAugust daily range (high 33.4 − low 24.1)

approx. 8°CJanuary daily range (high 8.7 − low 0.8)

Datasets behind this article

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