Explore Melbourne, Australia to São Paulo, Brazil ICMP RTT, jitter, packet loss and fiber latency limits on the AS203314 network.

🇦🇺 Melbourne, Australia (MEL) → 🇧🇷 São Paulo, Brazil (GRU)

Measurement round: 2026-08-16T04:07:28Z.

Melbourne to São Paulo averaged 305.3 ms, compared with a 128.34 ms city-centre fiber reference. The difference cannot be assigned to a particular cable or carrier from RTT alone.

Standard deviation was 8.1 ms, or 2.7% of the average. This describes variation within the sample without identifying its cause.

Latency Summary

Metric	Value
RTT	305.3 ms
Jitter	6 ms
Packet Loss	0%
Standard Fiber Floor	128.34 ms
Fiber Efficiency	42%
Latency Tier	High
Source Region	Asia Pacific
Destination Region	South America

Ping Measurement Series

50 ICMP echo probes were recorded in this round. Individual replies and their distribution are shown below.

Ping series: MEL → GRU

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 305.3 ± 1.15 ms (SE)

Sample distribution: box = interquartile range (300.3–307.8 ms), median 303.1 ms · whiskers = min–max · diamond = round average · each dot is one measured sample.

How to read this chart

The shaded band spans the measured minimum to maximum RTT of all samples collected up to that point, and the thin line traces the running average. The final position therefore matches the round statistics exactly. The band only widens when a new extreme sample arrives.

The dashed line is the round average, and the shaded band at the bottom is the theoretical fiber-optic floor (128.3 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	302.88
2	100	299.56
3	200	299.89
4	300	295.61
5	400	301.02
6	500	304.91
7	600	309.48
8	700	308.18
9	800	300.12
10	900	297.24
11	1000	308.81
12	1100	309.49
13	1200	304.50
14	1300	305.69
15	1400	305.33
16	1500	298.51
17	1600	303.68
18	1700	302.18
19	1800	314.01
20	1900	311.88
21	2000	305.53
22	2100	304.02
23	2200	297.22
24	2300	300.20
25	2400	295.85
26	2500	295.82
27	2600	301.66
28	2700	298.92
29	2800	300.91
30	2900	300.73
31	3000	304.69
32	3100	303.17
33	3200	323.19
34	3300	306.90
35	3400	302.99
36	3500	306.34
37	3600	313.16
38	3700	301.12
39	3800	297.40
40	3900	301.62
41	4000	299.47
42	4100	300.89
43	4200	308.06
44	4300	333.89
45	4400	329.83
46	4500	306.73
47	4600	324.81
48	4700	311.65
49	4800	302.19
50	4900	303.07

Download This Route's Data

Download the probe round as CSV, JSON or YAML under CC BY 4.0. Citation details include the route and round timestamp.

CSV JSON YAML Full dataset

Theoretical Fiber Latency

The propagation model uses public city-centre coordinates from GeoNames: Melbourne (-37.81400, 144.96332) and São Paulo (-23.54750, -46.63611). These are not facility coordinates or a surveyed cable path.

Physical Reference	Value
WGS-84 geodesic distance	13,105.1 km
Vacuum RTT floor	87.43 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	128.34 ms
Low-latency fiber material floor	127.82 ms
Engineering floor (5% path allowance)	134.77 ms
Research 1.33× mapped-fiber reference	170.69 ms
Estimated unamplified path loss	2752.1 dB
Transparent optical spans / inline amplifiers	173 / 172
Published RTT inflation over fiber floor	2.38×

The span count assumes 80 km optical spans. Attenuation is a power-loss term, not a propagation delay. See the model assumptions and equations.

Stability & Trend

Statistics from the same 50 replies. They describe this probe round, not continuous historical monitoring.

Round Statistic	Value
Minimum RTT	295.61 ms
Average RTT	305.3 ms
Maximum RTT	333.89 ms
Standard deviation	8.1 ms
Stdev / average	2.7%

Estimated RTT trend

Modeled comparison, not historical probe measurements.

Average: 305.9 ms
Minimum: 302.8 ms
Maximum: 308.4 ms
Average loss: 0.02%

Route Context

Departure PoP: Melbourne (MEL)
Destination PoP: São Paulo (GRU)
Region overview: Asia Pacific → South America
Corridor overview: Asia Pacific to South America
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

São Paulo to Melbourne latency and RTT: 274.7 ms

Fastest routes departing Melbourne (MEL)

Melbourne to Sydney latency and RTT: 9.8 ms
Melbourne to Singapore latency and RTT: 88.4 ms
Melbourne to Tokyo latency and RTT: 112 ms
Melbourne to Hong Kong latency and RTT: 138.5 ms
Melbourne to Taipei latency and RTT: 143.2 ms

Fastest routes arriving at São Paulo (GRU)

Ashburn to São Paulo latency and RTT: 101.4 ms
New York to São Paulo latency and RTT: 106.9 ms
Miami to São Paulo latency and RTT: 128.7 ms
Los Angeles to São Paulo latency and RTT: 131.3 ms
Seattle to São Paulo latency and RTT: 155.7 ms

Same corridor (Asia Pacific → South America)

Tokyo to São Paulo latency and RTT: 230.5 ms
Taipei to São Paulo latency and RTT: 273 ms
Hong Kong to São Paulo latency and RTT: 287.6 ms

About This Measurement

These ICMP measurements cover the two backbone endpoints. Access networks, routing policy and load can change an end user's result. A probe round is not an SLA.

The underlying replies are available under CC BY 4.0 in the Hats Network latency dataset. Per-pair files are available at /opendata/latency/latest/pairs/mel-gru.pings.{csv,json,yaml}. Cite the route, round timestamp and dataset version. Example: "Hats Network latency dataset, Melbourne → São Paulo round 2026-08-16T04:07:28Z, CC BY 4.0".

Round published August 16, 2026. See the full interactive latency matrix or browse more city-pair routes.

Melbourne, Australia → São Paulo, Brazil RTT