May
Other strong months: October and June
77/100 weather score
Japan · 1991–2020
Best time to visit
Narita
For Narita, May has the most comfortable weather in our climate comparison. Typical daytime highs are 23.3°C, nights average 15.2°C, and rainfall totals about 130 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthMay
Typical daytime high23.3°C
Typical night-time low15.2°C
May rainfall130 mm
July
Other strong months: August and September
66/100 weather score
November
Other strong months: April and December
72/100 weather score
Make the answer personal
Choose the weather
that suits you.
Set the daytime temperature and rainfall you are comfortable with. We will show only the months that meet every choice, using the measured 1991–2020 averages below.
1 month fits your choices for Narita
February has the lowest comfort score at 25 out of 100, compared with May at 77. The main reason is that days reach only 10.6°C, 13° below the 24°C the score treats as ideal.
Quick answers
Planning a trip to Narita?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Narita?
May is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 23.3°C and 130 mm of rain.
What is the hottest month in Narita?
August is hottest in this record, with a typical daytime high of 31.2°C and a night-time low of 24.3°C.
Which month has the least rain?
January has the lowest monthly rainfall total at 55 mm.
Is this a weather forecast?
No. These are long-term measured averages from 1991–2020. Check a current forecast before you travel.
Month by month
See how the weather
changes through the year.
The bars combine daytime temperature, night-time temperature and rainfall. The figures are measured historical averages, not a forecast for a particular trip.
| Month | Day | Night | Rain | Wet days | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 10.1°C | 1.7°C | 55 mm | 4.8 | 16.3°C | 9 h 59 | 26 | Good coverage |
| February | 10.6°C | 2.3°C | 71 mm | 6.5 | 15.0°C | 10 h 50 | 25 | Good coverage |
| March | 13.7°C | 5.2°C | 109 mm | 10.2 | 15.0°C | 11 h 51 | 32 | Good coverage |
| April | 18.8°C | 10.1°C | 132 mm | 10 | 16.3°C | 13 h 03 | 54 | Good coverage |
| May | 23.3°C | 15.2°C | 130 mm | 10.1 | 18.5°C | 14 h 02 | 77 | Good coverage |
| June | 25.8°C | 18.8°C | 182 mm | 13.3 | 20.9°C | 14 h 34 | 57 | Good coverage |
| July | 29.6°C | 23.1°C | 139 mm | 10.9 | 23.0°C | 14 h 22 | 45 | Good coverage |
| August | 31.2°C | 24.3°C | 112 mm | 8.3 | 25.2°C | 13 h 31 | 44 | Good coverage |
| September | 27.6°C | 20.9°C | 211 mm | 11.4 | 24.5°C | 12 h 22 | 45 | Good coverage |
| October | 22.4°C | 15°C | 251 mm | 10.4 | 22.5°C | 11 h 13 | 58 | Good coverage |
| November | 17.3°C | 9.5°C | 108 mm | 8.5 | 20.5°C | 10 h 13 | 53 | Good coverage |
| December | 12.5°C | 4.4°C | 65 mm | 6.1 | 18.2°C | 9 h 45 | 36 | Good coverage |
What has changed
Recent daytime highs are
2.0°C warmer in Narita.
Each bar shows the difference between the 2011–2025 average daytime high and the 1961–1990 average for the same month at the same station. A blank month does not have enough older observations for a reliable comparison.
Jan
+1.1
Feb
+1.7
Mar
+3.0
Apr
+1.9
May
+2.0
Jun
+2.4
Jul
+2.9
Aug
+2.3
Sep
+2.0
Oct
+1.7
Nov
+1.9
Dec
+0.8
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.7°C27 Jan 1969 | -5.1°C17 Jan 1970 | 76 mm15 Jan 2006 | 161 mm2020 · driest 0 mm in 2026 | 57 |
| February | 24.7°C14 Feb 2009 | -5.2°C13 Feb 1967 | 80 mm15 Feb 2014 | 191 mm1985 · driest 0 mm in 2026 | 57 |
| March | 25.7°C26 Mar 2025 | -4.4°C6 Mar 1977 | 88 mm30 Mar 1977 | 190 mm2018 · driest 9 mm in 1973 | 58 |
| April | 28.7°C22 Apr 2004 | 0.4°C1 Apr 2001 | 91 mm13 Apr 2020 | 237 mm2022 · driest 0 mm in 2025 | 58 |
| May | 31.7°C31 May 2014 | 6.8°C2 May 1993 | 70 mm21 May 2019 | 228 mm2008 · driest 0 mm in 2025 | 57 |
| June | 36.4°C30 Jun 2022 | 11.2°C21 Jun 1981 | 120 mm7 Jun 2014 | 343 mm1985 · driest 0 mm in 2025 | 57 |
| July | 37.8°C20 Jul 2004 | 12.5°C3 Jul 1976 | 172 mm8 Jul 2000 | 402 mm2021 · driest 0 mm in 2025 | 58 |
| August | 38.5°C7 Aug 2015 | 16.5°C9 Aug 1980 | 183 mm4 Aug 1986 | 323 mm1988 · driest 0 mm in 2025 | 56 |
| September | 36.2°C4 Sep 2010 | 11.7°C27 Sep 1969 | 260 mm22 Sep 1996 | 408 mm2015 · driest 0 mm in 2025 | 56 |
| October | 32.8°C6 Oct 2016 | 5.8°C31 Oct 1983 | 182 mm25 Oct 2019 | 532 mm2004 · driest 0 mm in 2025 | 57 |
| November | 27.5°C7 Nov 2023 | -0.9°C26 Nov 1969 | 86 mm12 Nov 2004 | 218 mm2003 · driest 0 mm in 2025 | 57 |
| December | 24.2°C16 Dec 2023 | -3.7°C31 Dec 1967 | 80 mm24 Dec 1972 | 190 mm1968 · driest 0 mm in 2025 | 57 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 3 | 2 |
| February | 0 | 0 | 3 | 2 |
| March | 0 | 0 | <1 | 4 |
| April | <1 | 0 | 0 | 3 |
| May | 9 | <1 | 0 | 4 |
| June | 18 | 2 | 0 | 4 |
| July | 26 | 16 | 0 | 3 |
| August | 28 | 22 | 0 | 3 |
| September | 21 | 8 | 0 | 5 |
| October | 6 | <1 | 0 | 5 |
| November | <1 | 0 | 0 | 3 |
| December | 0 | 0 | <1 | 2 |
| Month | Dry days reaching 20°C | Wet days | Days with heavy rain | Weeks with 3+ wet days | Typical high by year |
|---|---|---|---|---|---|
| January | <1% | 17% | 6% | 10% | 8.2–11.2°C |
| February | <1% | 24% | 9% | 28% | 8.5–12.3°C |
| March | 3% | 35% | 14% | 38% | 11.5–15.7°C |
| April | 25% | 36% | 15% | 41% | 16.9–20.2°C |
| May | 61% | 34% | 14% | 34% | 21.3–24.3°C |
| June | 59% | 42% | 18% | 56% | 23.3–26.9°C |
| July | 68% | 33% | 14% | 33% | 26.2–31.3°C |
| August | 74% | 28% | 11% | 33% | 29.1–32.8°C |
| September | 62% | 38% | 19% | 48% | 25.2–29.1°C |
| October | 52% | 35% | 18% | 35% | 20.5–23.3°C |
| November | 16% | 27% | 10% | 28% | 15.3–18.6°C |
| December | <1% | 18% | 7% | 12% | 10.6–13.7°C |
A dry day reaching 20°C records under 1 mm of rain. A wet day records at least 1 mm, while a heavy-rain day records at least 10 mm. The weekly figure is the share of seven-day periods containing three or more wet days. The final column shows the middle 80% of average daytime highs recorded for that month in individual years; a wider range means conditions have varied more from one year to another.
The evidence behind this page
Where these figures
come from.
- Place identity
- GeoNames 2111684
- NOAA station
- JA000047682 · CHIBA
- Station distance
- 28.3 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 16 usable years
- Daylight
- Calculated from latitude 35.78°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Sea temperature
- NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 33 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Narita is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
How travel partnerships will work