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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Arusha Weather Records (TZ000063789)

Record envelope, standing records and threshold days for Arusha (TZ000063789), Tanzania, with 31 years of record.

Key Facts for Arusha

  • Arusha (TZ000063789) is a weather station in Tanzania at -3.33 latitude and 36.63 longitude, 1,387 m (4,551 ft) above sea level.
  • The station reports from 1959 to 1989, 31 years of record.
  • 0 records set at Arusha still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Arusha set a daily record precipitation of 43.8 mm (1.7 in) on 31 December 1989.

About the Station

  • Location: Tanzania, -3.33 latitude, 36.63 longitude.
  • Elevation: 1,387 m (4,551 ft).
  • Period of record: 1959 to 1989, 31 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Arusha, with 2026 drawn through them The band shows the record high and record low for each calendar day at Arusha. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Arusha. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Arusha, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
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Marn/an/an/an/a
Aprn/an/an/an/a
Mayn/an/an/an/a
Junn/an/an/an/a
Juln/an/an/an/a
Augn/an/an/an/a
Sepn/an/an/an/a
Octn/an/an/an/a
Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

0 standing records
Standing records at Arusha by the year they were set 0 records at Arusha still stand. 00000000000
0 records at Arusha still stand.
Standing records at Arusha by the year they were set
Year setStanding records

Wettest Day of Each Month

Nov: 148.8 mm (5.9 in)
Record daily precipitation for each month at Arusha The wettest day on record for each calendar month at Arusha. The most was 148.8 mm (5.9 in) on 18 November 1963. 050100150 Jan: 57.4 mm (2.3 in), 3 January 1973 Jan Feb: 118.3 mm (4.7 in), 21 February 1977 Feb Mar: 114.7 mm (4.5 in), 18 March 1981 Mar Apr: 116.8 mm (4.6 in), 7 April 1964 Apr May: 66.9 mm (2.6 in), 4 May 1981 May Jun: 56.0 mm (2.2 in), 1 June 1979 Jun Jul: 21.3 mm (0.8 in), 26 July 1967 Jul Aug: 22.4 mm (0.9 in), 21 August 1959 Aug Sep: 25.0 mm (1.0 in), 22 September 1976 Sep Oct: 41.1 mm (1.6 in), 29 October 1985 Oct Nov: 148.8 mm (5.9 in), 18 November 1963 Nov Dec: 106.5 mm (4.2 in), 26 December 1988 Dec
The wettest day on record for each calendar month at Arusha. The most was 148.8 mm (5.9 in) on 18 November 1963.
Record daily precipitation for each month at Arusha
MonthRecord daily precipitation (mm)Date
Jan57.4 mm (2.3 in)3 January 1973
Feb118.3 mm (4.7 in)21 February 1977
Mar114.7 mm (4.5 in)18 March 1981
Apr116.8 mm (4.6 in)7 April 1964
May66.9 mm (2.6 in)4 May 1981
Jun56.0 mm (2.2 in)1 June 1979
Jul21.3 mm (0.8 in)26 July 1967
Aug22.4 mm (0.9 in)21 August 1959
Sep25.0 mm (1.0 in)22 September 1976
Oct41.1 mm (1.6 in)29 October 1985
Nov148.8 mm (5.9 in)18 November 1963
Dec106.5 mm (4.2 in)26 December 1988

Latest Records

14
Latest records at Arusha
DateStationRecordValueBeat old record byOld record stoodSignificance
31 December 1989Arusha, TZdaily rain43.8 mm (1.7 in)11.1 mm (0.4 in)12 years15 of 100 (Routine)
23 December 1989Arusha, TZdaily rain21.8 mm (0.9 in)5.1 mm (0.20 in)6 years8 of 100 (Routine)
8 December 1989Arusha, TZdaily rain26.9 mm (1.1 in)3.3 mm (0.13 in)16 years10 of 100 (Routine)
5 October 1989Arusha, TZdaily rain7.6 mm (0.30 in)2.4 mm (0.09 in)20 years12 of 100 (Routine)
1 October 1989Arusha, TZdaily rain0.8 mm (0.03 in)0.2 mm (0.01 in)19 years8 of 100 (Routine)
22 July 1989Arusha, TZdaily rain1.8 mm (0.07 in)0.8 mm (0.03 in)12 years8 of 100 (Routine)
8 July 1989Arusha, TZdaily rain (Tie)0.5 mm (0.02 in)tie10 years1 of 100 (Routine)
28 June 1989Arusha, TZdaily rain (Tie)1.4 mm (0.06 in)tie20 years2 of 100 (Routine)
30 April 1989Arusha, TZdaily rain42.2 mm (1.7 in)5.0 mm (0.20 in)10 years9 of 100 (Routine)
8 April 1989Arusha, TZdaily rain43.8 mm (1.7 in)13.3 mm (0.5 in)8 years13 of 100 (Routine)
21 March 1989Arusha, TZdaily rain44.4 mm (1.7 in)23.0 mm (0.9 in)11 years22 of 100 (Routine)
12 March 1989Arusha, TZdaily rain49.6 mm (2.0 in)18.7 mm (0.7 in)20 years22 of 100 (Routine)
8 February 1989Arusha, TZdaily rain18.4 mm (0.7 in)7.9 mm (0.31 in)20 years14 of 100 (Routine)
10 January 1989Arusha, TZdaily rain38.9 mm (1.5 in)31.0 mm (1.2 in)27 years43 of 100 (Notable)

Extremes by Year

1959 to 1989
Yearly extremes at Arusha: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)148.8 mm (5.9 in)196377.3 mm (3.0 in)31
Wettest five days (Rx5day)284.8 mm (11.2 in)1963117.2 mm (4.6 in)31
Longest dry spell (CDD)126 days196659 days31

Wettest day (Rx1day)

Wettest day (Rx1day) at Arusha by year The wettest day of the year at Arusha, 1959 to 1989. The record is 148.8 mm (5.9 in) in 1963, marked on the chart; the median year is 77.3 mm (3.0 in). 050100150196019651970197519801985Record: 148.8 mm (5.9 in) in 1963
The wettest day of the year at Arusha, 1959 to 1989. The record is 148.8 mm (5.9 in) in 1963, marked on the chart; the median year is 77.3 mm (3.0 in).
Wettest day (Rx1day) at Arusha by year
YearWettest day (Rx1day)
195935.3 mm (1.4 in)
1960102.9 mm (4.1 in)
196152.8 mm (2.1 in)
196251.6 mm (2.0 in)
1963148.8 mm (5.9 in)
1964116.8 mm (4.6 in)
196538.6 mm (1.5 in)
196689.3 mm (3.5 in)
196796.8 mm (3.8 in)
196894.3 mm (3.7 in)
196937.8 mm (1.5 in)
197040.6 mm (1.6 in)
197184.0 mm (3.3 in)
197268.8 mm (2.7 in)
197357.4 mm (2.3 in)
197481.3 mm (3.2 in)
197545.2 mm (1.8 in)
197633.2 mm (1.3 in)
1977118.3 mm (4.7 in)
197888.3 mm (3.5 in)
197968.6 mm (2.7 in)
198039.6 mm (1.6 in)
1981114.7 mm (4.5 in)
198283.2 mm (3.3 in)
198336.3 mm (1.4 in)
198484.8 mm (3.3 in)
198577.3 mm (3.0 in)
198692.1 mm (3.6 in)
198739.4 mm (1.6 in)
1988106.5 mm (4.2 in)
198949.6 mm (2.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Arusha by year The wettest five days of the year at Arusha, 1959 to 1989. The record is 284.8 mm (11.2 in) in 1963, marked on the chart; the median year is 117.2 mm (4.6 in). 0100200300196019651970197519801985Record: 284.8 mm (11.2 in) in 1963
The wettest five days of the year at Arusha, 1959 to 1989. The record is 284.8 mm (11.2 in) in 1963, marked on the chart; the median year is 117.2 mm (4.6 in).
Wettest five days (Rx5day) at Arusha by year
YearWettest five days (Rx5day)
195988.8 mm (3.5 in)
1960157.4 mm (6.2 in)
196199.1 mm (3.9 in)
196274.7 mm (2.9 in)
1963284.8 mm (11.2 in)
1964203.5 mm (8.0 in)
1965100.8 mm (4.0 in)
1966114.1 mm (4.5 in)
1967116.4 mm (4.6 in)
1968123.5 mm (4.9 in)
196983.4 mm (3.3 in)
197090.2 mm (3.6 in)
1971190.7 mm (7.5 in)
1972107.6 mm (4.2 in)
197397.5 mm (3.8 in)
1974133.3 mm (5.2 in)
197553.7 mm (2.1 in)
197651.0 mm (2.0 in)
1977216.4 mm (8.5 in)
1978202.0 mm (8.0 in)
1979200.7 mm (7.9 in)
198064.4 mm (2.5 in)
1981194.8 mm (7.7 in)
1982209.0 mm (8.2 in)
198377.3 mm (3.0 in)
1984165.1 mm (6.5 in)
1985129.9 mm (5.1 in)
1986185.7 mm (7.3 in)
198764.1 mm (2.5 in)
1988135.4 mm (5.3 in)
1989117.2 mm (4.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Arusha by year The longest dry spell of the year at Arusha, 1959 to 1989. The record is 126 days in 1966, marked on the chart; the median year is 59 days. 050100150196019651970197519801985Record: 126 days in 1966
The longest dry spell of the year at Arusha, 1959 to 1989. The record is 126 days in 1966, marked on the chart; the median year is 59 days.
Longest dry spell (CDD) at Arusha by year
YearLongest dry spell (CDD)
195946 days
196084 days
196155 days
196259 days
196366 days
196468 days
196552 days
1966126 days
196720 days
196868 days
196963 days
197074 days
197155 days
197233 days
1973105 days
197470 days
197541 days
197659 days
197732 days
1978106 days
197934 days
198036 days
198188 days
198233 days
198395 days
198481 days
198577 days
198656 days
198736 days
198841 days
198943 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

31 years, 1959 to 1989

A day with at least 70.1 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 160.2 mm (6.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Arusha: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years70.1 mm (2.8 in)
5 years98.6 mm (3.9 in)
10 years115.6 mm (4.6 in)
25 years135.0 mm (5.3 in)
50 years148.2 mm (5.8 in)Longer than the 31 years of record
100 years160.2 mm (6.3 in)Longer than the 31 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 31 years of values from 1959 to 1989.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 148.8 mm (5.9 in) in 1963; 118.3 mm (4.7 in) in 1977; 116.8 mm (4.6 in) in 1964.

Download the Data

  • Data for Arusha standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Arusha threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).